7.1 here - all Mirage Omnisat Micros for surrounds. This is a great little speaker, unobtrusive, easy to mount anywhere, huge sound for the size and $58 a pop on ebay. For that price and 50ft of cable why wouldn't you go 7.1.

Having said that, wouldn't it be sweet if you could steer the amps into specific channels just like you can steer the inputs! 130 watts on the main speakers in a 5.1 system would be saweeeet.