I'm ready to start down the road to separates. FYI, I'll be using my h/k AVR520 as a pre/pro and I have an Axiom 5.1 speaker set-up. I can get the Sony amp, from an authorized dealer here in NYC, for $900. The Marantz, I'd probably get a refurb from ac4l.com for $700. I'm kinda leaning toward the Sony, even though I'm NOT a big fan of theirs, but the price seems right and that 5-year warranty is SWEET. The Marantz has a better price, it IS a refurb, but only has a one-year warranty. The MM9000 is also rated at 150 WPC, whereas the Sony is rated at 115 WPC. And let's not forget the THX Ultra certification... Any comments or suggestions would be great! Thanks.