The best AV Pre Amp and Amps?

Looking to upgrade my system (aren't we all!!) Just upgraded to Snell B7 ref speakers and I'm sure my Onkoyo 875 is not getting the most out of these wonderful babies. I want to move back to separates and I want great video processing but I’m more concerned with the quality of the audio, specifically two channel. I’ve been looking at the Lexicon MC12 but I’m a little concerned over a review I read regarding the remote and non-compressed audio capability. Also looking at the Krell Evolution 700 which sounds great but is it much more then I need; because due to space I’m trying to have a great listening room within a home theater. Also looking at what I’m sure would be a step down but maybe a more practical choice Arcam and NAD. What are the pros and cons??