I have one and I really like it. I chose it first of all because it was in the price range I wanted, and it didn't come with a cartridge, which says something to me (like it's close to the $1k range quality, if one could standardize that).
The tonearm is very versatile, and I've found it to match up well with everything I've tried so far. Originally I had a Dynavector 10X5 on it, which was an excellent combination, you really can't go wrong with those two. In fact, I ordered them together. Next I tried my Grado Silver, which sounded better on the RM5 than it did on my Thorens TD125 MKII. At the moment I just bought a Grado Platinum, and although it's still breaking in, I think it might be the best combination yet - getting as close to stunning with this class of equipment as I've heard so far. So you have a lot of options when it comes to cartridges. The tonearm is carbon fiber (you probably already know), and it's definitely quality. VTA and azimuth adjustments are very easy, and once you get used to using the little lever to raise and lower the tonearm it's very easy and beneficial (safer for your stylus). BTW, it will probably be useful for you to know that the effective mass of the tonearm is 11g.
I also like the size of this table, it hardly takes up any space, and it's also height-adjustable. Although not the heaviest in the world (I think about 12lbs), it's very stable and resonance apparently isn't much of a problem. I've actually never heard any noise from people stomping around, and my RM5 is pretty much on the floor.
A few nights ago I ordered the Speed Box for it, which supposedly improves the sound quality quite a bit over having the power supply connected directly to a mains outlet. No doubt I'll have something to say about it once it gets here.
So overall it's a very nice table, quality build, minimal and smart design, and easy to use. For me the best aspect is the tonearm, which, like I said, can work well with many cartridges and is solidly built. I give it a very high recommendation. Oh, and it looks really nice too!
Any more specific question I'll be more than happy to answer.