Hello everyone, I'm in the market for a separate amp, but would like to get some opinions. I have a pair of B&W Nautilus 805s which are being powered by my Marantz SR6400 receiver for the time being. It sounds good, but it's crying for some juice. I was looking at the Marantz MM-9000 (5x150w) or a pair of MA-700 (1x200w) mono blocks cause I already have a Marantz receiver which I will use as my pre-pro. I can pick up a used set for about $600-700 (either MM-9000 or two mono blocks). I've never heard B&W with a Marantz separate amp, so that's why I'm looking for comments. On the other hand, every time I've heard the 805s they have been powered by a Rotel RB-1070 (2x125w) or RB-1080 (2x200w). So I was looking for either the Rotel RB-990, RB991, or RB-1080 (whichever is the best deal). I know what it will sound like with Rotel, but obviously the Marantz MM-9000 will leave me flexibility with adding more speakers later on. In comparison to the Rotels, MM-9000 is only 150watts, which I'm sure is plenty, but what really caught my attention is that the Marantz has a S/N ratio of 95db while all the Rotels have a S/N ratio of 120db! So... I don't know, comments?? I wish I could listen to them both, but I don't think I'll be able to. Btw, my budget is less than $800 (including shipping).