Man, with those speakers, I would try MBL amps for sure. From what I've read, MBL works very hard to match the character of the speakers' sound to their amps. Not knocking the McIntosh of course (I am a big Mc buff) but it may be worthwhile to check it out. Did you get your 101s from a dealer? If so, maybe they could lend you some of their amps to try out?
At any rate, it looks great. I really want to hear some radialstrahler at some point.
Arthur