I haven't bought any new Polks for several years now. I'm just a novice at this HT stuff. I was wondering if the CS1 is getting phased out. Our local (Cincinnati) hh gregg had them for $98 today. I picked one up in the hopes of upgrading to a 7.1 receiver. I currently have a CS245i center with RT25i's in the rear and RT600's up front. Any problems with this set up? I was looking at either the Denon 2805 or the Onyko TSXR603B. Any help/suggestions would be appreciated.