If you are sticking with Mac, yes, the 601's will serve you brilliantly. And save you money, as I see several pair here and on USaudio. Long ago, I went from the MC300, to the MC501, then to the 601's...hard to do better without paying up. I have since left Mac, but that is a whole different thread.
Mac 611's
I'm thinking about upgrading from a McIntosh 452 amp to a pair of 611's. The maximum price I am willing to pay is close to the 611's and I'm looking for 1 or 2 channel alternatives which are actually available in my local area to listen to (Washington state). Any suggestions? Again, I'm not interested in paying any more and looking for better quality and a little more power than my 452. For that kind of money, should I just stick with my 452, get the 611's or consider an alternative you guys might suggest? Thoughts?