Comedychief, the subject of amplification for Maggies has been discussed at length in these forums and reappears frequently enough that the best and most current advice is always available. Yet, for the most part, there is a common thread. Maggies like high quality high current amps. I've had Maggies since 1991 and have driven them first with adcom, then with McCormack, then with Cary 500 MB, then with Cary 500.1 MBs. Everytime I get a bigger, better amp, the Maggies deliver.
I haven't tried tubes. Maggies like current, tubes deliver voltage. Just doesn't seem like a good match to me, but the proof is always in the listening.
I'd be looking at Pass, Cary solid state, McCormack, Plinius, the JC-1. Invest what you can in the amps. Your Maggies will hold up their end of the bargain.