The very latest McIntosh amps are extremely nice. I think for several years they were kind of like the "Cadillac" of amps, and not in a good way. Over-priced, bloated and not competitive with the very best. They were the gold-standard in the 70s and 80s perhaps.
However, I have recently listened to many of their latest amps and while I won't buy a McIntosh (still over-priced, in general) the sound is very nice. The construction has always been top-notch also. My local dealer doesn't sell very much McIntosh anymore because the reputation (he says) has taken a beating. But we both agree that these are again some of the best amps going.
I really believe we are in a golden age of amp design and the quality of what's available is truly remarkable, from just 10 years ago. Go listen.