I voted "Both are good, it doesn't matter."
I'm just not the kind of person who can say that in all cases and under all conditions one type is better than the other. Cartridges and turntables and associated gear are all tools in my music toolbox. If you open my automobile toolbox, you will find more than one expensive wrench. In my wood working toolbox, you will find more than an expensive saw. This business of playing records will never lend itself to a one-size-fits-all solution for me--maybe for others, but not me.
It would be just as difficult and pointless to claim superiority of moving magnet (as if they can all be lumped together--as if I can claim expertise on the matter after having heard a few) as it would be to claim superiority of moving coil (as if they all can be lumped together--as if I can claim expertise on the matter after having heard a few).
Seems like there could be people here who, if they owned a stereo store would stock one turntable, one arm, one preamp, one amp, and one type of speakers and when you walked in to buy a stereo, you would buy this system because this person decided this was the best and it's the best for everyone.
Perhaps there are others who would agree with that; but I don't.
I have a number of MC's of all shapes and sizes, P Mounts, HOMC, LOMC, Ortofon, Denon, Audio-Technica: they are fun to collect and fun to listen to.
I run the LOMC's through an SUT into a rather modest MM preamp and they sound fantastic.
But I started with moving magnet, then to moving iron, induced magnet, and a few other theoretical descriptions of essentially the same idea (but with very different results in the practical world). Do these others count as MM? There is no magnet that moves in Moving Iron designs. For the sake of argument, lets just say, yes: Anything that isn't MC is MM.
I knew this poll would eventually start to turn into a battle of MM vs. MC, and the battle lines are just too broad.
For me, I'm going to have to agree that if there's one thing I notice above all among the probably hundred or so carts I have is that what seems to matter more is cantilever, cart/arm matching, gear matching and perhaps other variables like thoughtful consideration of exactly what one is trying to achieve and what medium one is considering such that different tools designed with different design priorities can address this approach differently and flexibly as a matter of an overall strategy.
Is there only one type of record? Is there only one amp topology? Is there only one type of listening space or listening purpose?
Should we start drawing battle lines over what's the best type of diamond tip? Conical? Elliptical? Parabolic?
And we can continue to split hairs. What kind of elliptical? Exactly which parabolic?
And what about cantilever?
For me, the best answer would be: "It depends." But that wasn't offered. Perhaps "Both are good, and it does matter," would have been a better option.
That is a shame. But this presents an opportunity for me. Send them to me. I'll be glad to take them off your hands. I'm not kidding. Send me a PM and I will give you my mailing address.
I was absolutely delighted recently when a moving magnet cartridge that I never would have tried on my own showed up on my doorstep recently and so I tried it. I've heard expensive moving coils, capable of competing with the best and certainly well-received by the critics, properly set up, in my own system in the comfort of my own home, with very familiar records. They are not flawless. Far from it. This moving magnet I received is flawed, too, but it sounds so nice anyway. I mean--wow.
Honestly, my very favorite cartridge right now is the Pickering XLZ-7500S, and I don't even have and have never heard the original OEM stylus, but I do have a Stanton D98-IIS, which supposedly is the equivalent. Why is it may favorite? Well, if I said it's because it sounds very much like my reputedly best LOMC, then you could use that as evidence that MC is clearly the winner. But it doesn't sound like other MC's I have. In fact, it doesn't sound like most of them. And my reputedly best LOMC, the AT, suffers next to it for some reasons that have been pointed out with that cartridge--the stylus, sharp, wonderful, detailed, excellent as it is, is not forgiving of any record that is not absolutely perfect and pristine. It is an extremely critical cartridge.
If I said that it's my favorite because it behaves like MM's in that I have a virtual world of styli that I can change in and out depending on what I'm playing, then you could take that as evidence that MM or MI or some other theory is clearly the winner. As wonderful as this cartridge sounds, it does sound different in many ways than "typical" MM, so does it even represent MM? The D98-IIS stylus is also the stylus used in the 981-HZS, a more typical MM cartridge in design. To my ears, the XLZ and the HZS sound worlds apart using the very same stylus. But neither sounds bad and neither wins. They tie for first place in the Miss America pageant. The HZS is an MM. I love it. Do I love it more than my LOMC's? Yes, actually, for a number of reasons including how it sounds--but there's no point in comparing sound because they both sound excellent.
The 981-HZS, the Pickering XLZ-7500S, Denon DL-103 and the AT OC9ML/II sound different from each other, but the difference in sound between the AT OC9ML/II and the Stanton or the Pickering (depending on which stylus) is far less than the difference in sound between the AT and the Denon. So what does that mean? And which is better?
I was also blown away by this humble Shure M91E recently and myself and another AKer both concluded independently that we think that it sounds better than the HOMC DL-110.
The common response to that is, "Well, we're talking about carts that cost at least $1,000 and since you can't really get an MM that costs more than $1,000, then MC's win, obviously."
That may be so. I can't respond to that other than to say, well, maybe for a few select people who will spend $1,000 or more on a cartridge, MC is not a better choice--it's the only choice. But maybe it takes $1,000 to get an MC to really outshine the best MM's that can do all that for less. I don't know. I do know that SoundSmith would probably have a problem with that assessment, and even Grado who offer multithousand dollar Moving Irons (with all the versatility-killing compromises of MC).
There are some things that come out of all these comparisons: I do think, based on what I've heard in my own cartridges, that low impedance is what is mostly responsible for MC sound than anything else. When you make a low impedance MM and hook it up to a SUT, it sounds like an MC through a SUT.
But there are plenty of MM's that get around that issue and remain high impedance--maybe not as well as LOMC does because LOMC and LOMM are both inherently unencumbered.
But for me, the real dividing line is the impedance issue and I do agree that HOMC's sound more like HOMM's and LOMC's sound more like, well, the one LOMM that I own. And once you have that ability to compare under your belt, you can actually make your LOMM sound like a DL-103 by putting in a certain stylus. And you can make it sound like an AT OC9ML/II by installing a different stylus. And you can make it sound like something else all together by putting in a third stylus. But what you can't do is make it sound like a HOMM by changing the stylus and you can't make it sound like HOMC, either. And the ability to change around styli with the LOMM makes it pretty clear to me that most of the difference in what I hear LOMC to LOMC resides in the cantilever and the tip, and my LOMC collection continues to grow.
So, in my lab, there lies the difference. And it's all fascinating and fun and I love my MM's too because they sound awesome as well! And if you want to go down another road, compare two-coil MM's to four-coil MM's, and MM to MI, and induced magnet to other designs because they all offer subtle differences in how they handle music and the business of traveling the groove.
Preamps also have a lot to say in how things sound, and also cables and more importantly, cable length (and theoretically, it's really capacitance). I recently hooked up a Pickering XSV/3000 using the shortest length RCA's I could. I even used a very cheap pre, not expecting a lot. If you can make a good quality RCA cable yourself, cut to length and solder the terminals so that there is no extra--six-inch lengths if you can do it, I think most people would be amazed at what happens to a HOMM--kind of amazing, really. It opens right up on the top end. Maybe not to the extent of an LOMC, but certainly equal or even better than the HOMC's I've got. Put that HOMC in that circuit, though, and not much changes.
Based on my foolings around, I firmly believe people who have made claims to make MM sound as transparent as MC by paying strict attention to cables/interconnects and especially capacitance load and perhaps preamp loading/"cartridge" loading.
I still haven't gotten to cartridge loading, but it seems to me that the real fly in the ointment with MM is the capacitance and this seems to be tamable as well, but it takes a lot more knowledge to get it right than it takes to plug in an LOMC (or LOMM) and get that response.