The problem with Hafler and Crown is they need full tune ups every ten to 15 years. ARC everytime you need to replace tubes the amp needs a full going over. I don't think there is anything out there thats is equivalent to Mac and has the long life expectancy. I guess my first choice would be Accuphase. They have the technology, great design and very careful and well though assembly processes. They have Quad balanced amps and Class A amps, too. I much prefer their digital room EQ and of course Mac doesn't build a electronic crossover that Accuphase does. No they don't build TT's but thats OK with me. They did build great CD/SACD players. But I haven't checked out their dacs. The problem with Accuphase is if you think Mac is expensive you have never priced Accuphase or Boulder or some of the other esoteric brands. Speakers would be the most difficult for me to choose. Probably JBL dd67000, as Snell is gone, Klipsch just doesn't have the bass extension, and most other speakers are dynamically challenged. I could get by with 100 watts per channel with the JBL's.
If I had tons of money I would choose Magico. but here again you need big power. But I do like the sound they produce. They make the only dome metal tweeter I can tolerate. But I would need the JBL as I don't like point source designed systems and the JBL uses horns to control directivity. They uses Mac's patened magnetic structure to drive the woofers and a sandwiched cone similar to Magico for even lower distortion just like Mac does for its latest speakers. So I guess it would be Clear audio TT's, they make Macs tables, Accuphase for electronics, DAC and disc player and JBL for speakers and Dynavector cartridges. Though if I were fabulously rich I would like a M9 speakers and 4 MC 1.2 K's. But I will settle for a pair of MC 830's for my XRT 28's next year. 500 watts is plenty across 4 ohms.
You should stop spreading
misinformation about Audio Research. What you have said is totally inaccurate. You like McIntosh and that's perfectly fine. However, saying that replacing the tubes in an ARC requires a "full going over" is
totally false. ARC products, particularity their preamps, are just as reliable as the stuff from McIntosh. Everything man made will fail at some point. If that were not the case, we wouldn't have any McIntosh service centers, would we?
Yes, ARC runs tubes a little harder. That said, if you stay on top of tube replacements, and don't run them until they die, and don't buy junk tubes, there won't be any issues. Problems occur when people do not follow the recommendation in the manual to replace tubes at X number of hours and/or install tubes that don't hold up as well to the more aggressive bias.
Replacing the tubes in an Audio Research preamp, DAC, or CD player is plug and play. Some of their amps can be more challenging to bias. Most are very simple. A small number of models require input tube bias adjustments; this is an area that can catch people off guard and does require tightly matched tube pairs. The main point is, this isn't some complicated science project. The upkeep on ARC components shouldn't be a concern to any potential buyer.
Now to address the OP's question...
When I really got into this hobby about 16 years ago, I jumped into the deep end of the pool immediately. Straight to separates and McIntosh. Looking back I do wonder if a portion of the affinity I have had for McIntosh is tied to it being the first brand I owned. If it had been Krell, Conrad Johnson, etc.... would it have been those instead? My enthusiasm for McIntosh has had ups and downs. What I can say is, that in all the time I have been in the hobby, I have never not had at least one McIntosh component; that fact remains true to this day.
Circling back to my reference to ups and downs on my enthusiasms for the brand. I am definitely in a down period at the moment, that is without a doubt the lowest. With that understanding, I am still a McIntosh owner and there are a few products I would like to own. Am I actively on the hunt for Mac gear? No. However, if I had the right opportunity to acquire an MC275 or a pair of MC100 amps, I would take it.
Regarding alternate brands, that is an easy one for me. Audio Research & Ayre. McIntosh makes some great products, but
my opinion is that ARC and Ayre are a cut above Mac. But, let's be honest. When you get to brands at this level and higher, it's very much about taste and preference.