Amp decision for Nautilus 804's.

It didn't seem all that long ago that I started with a set of B&W DM-602's, than sold those for CDM 1NT's, and now I just purchased a set of Nautilus 804's. Now that I have the 804's I know my HK power amp is not goning to make these speakers shine. I was looking at either a Classe CA-201 power amp or a Rotel Rotel RB-1080, however I'm leaning more towards the Classe as I hear they have a nice warm sound to them which is really what I want. Does balance outputs really make a huge difference? If so what cables is everyone using? If any of you need more specs on my system please view my virutal system on audiogon.

Thanks