In looking at my system, which doubles as a two channel and a HT system, I want killer power for my LR, but I really don't think the surrounds need anything special. Also, while the center is a critical speaker for HT, I don't think it needs anywhere near the power that the LR need.
In looking at multi-channel amps that would do justice to my mains, the amps are huge, heavy, hot, and expensive. This just seems like overkill. Does anyone make a 5 or 7 channel amp where two channels are more robust than the rest? Note: I ask out of curiosity, and am not actually in the market.