MarkLevinson331 BiAmp or Jeff Rowland 7 for MG3,6R

More power would with out a doubt would help you, I would suggest looking into the new Parasound JC-1 amps(with a budget)- though I haven't had these amps on my 3.6's I can't imagine it would be anything less then amazing. Or with out a budget I would go for the Tenor hybrid 300 mono's- which is what I am saving for right now. Also since your speakers just showed up I would give them a chance to break in(a real long time if they are new) and play with room placement, it took me about 3 months of toying with location to get them right. I have found room treatment can be very helpful I am playing with tuned helmholtz resonators(3-4 of them), also cables and your front end are very very important with these speakers. Also when/if you become comfortable with it doing the fuse bypass does amazing things to the sound, then do some custom stands/frames and new crossovers and you'll have a speaker that is capable of running with the big boys! You have a great foundation to a superb system- enjoy!

I do agree with Travis saying that the fuse bypass isn't for everyone but if you want the most out of your speakers you gotta do it. Life ain't perfect and something could happen to the ribbon, but after 6 months+ of no fuse problems at all- I didn't feel it was that much of a risk. Besides the ribbons are fairly inexpensive as long as you give them your old blown tweeter back as a core- new tweeters are about $100ea. For how much I spend on this hobby that isn't really much of a concern to me. But it is a good point to restate the fact that something could happen with out your fuses- be warned!