I just upgraded my main speakers from B&W CDM 7NTs to B&W 803s and am currently driving them with a 7100 (using 4 channels to biamp each speaker). I have a 950 as the pre/pro. Nautilus speakers have a reputation of being power hungry and although I like the sound I'm getting now I'm wondering if I might get an improvement by getting a couple of M200s and using them to drive the 803s.

Any suggestions on whether I'd notice an appreciable difference? At just $299 each it would be a relatively cheap experiment.