I would be looking for a receiver with Audyssey multiEQ 32XT. The Pioneer stuff is nice, but I trust Audyssey with room correction more than I do MCACC. With 32XT, you can also integrate dual subs much more easily than other room correction EQs. Personally I would go with bookshelf speakers for the side surrounds instead of bipoles, but that is just my preference. As others have said, steer clear of Klipsch subs, although their SW115 does not look bad- you can get a good deal on it if you buy a Klipsch package. Personally I would rather have a
Hsu VTF15h or
Rythmik FV15.
This beast from Power Sound Audio looks like it could be great as well.