Perhaps a good lower cost option would be receiver + 3-channel amp for the fronts with the receiver powering the surrounds. A Denon 2809 would be a good receiver option.
I recently had the Denon 2809, but replaced it with a Yamaha V3900 and the whole sound field is so much better. I also recently got the Marantz SR6003 for an amazing deal ( i need the money so im selling the yammi 3900, more options than i need) and its a flat out performer IMO.
So if your looking for a dedicated processor for right now i'd say give the 8003 a shot if its in your price range.
I have been testing out numerous recevier lately and will continue to until the Emotiva XMC-1 comes out...which is looking to be next year

. But the upcoming UMC-1 looks promising, although it your not on the pre-order list dont expect it anytime soon...