Saturn:

Thanks for the suggestions. I actually have looked at the ASL amps. I'm just not sure how those tiny amps will match with the M80s, or how well I'll like them. I unfortunately think I will NOT like them -- I like my music loud

Which leads me to this, I will probably need amps with a "moderate" power level. ASL makes those amps, but those are 2000 USD per pair instead of 250 ...