I currently have an AIWA AV-D58 receiver for my bedroom. It has worked great for me and movies have never sounded better. The only complaint on it is the remote control and its design. But desides that it works great. I have some extra cash and am looking to upgrade my system from a DTS receiver to a 6.1 Dolby Digital EX/DTS-ES receiver. I am not to familiar with these kind of receivers in terms of whoich are the better deal. I have looked on eBay at some models, and recently saw a PIONEER VSX-D811S that looked rather impressive for the asking price(about $300.00). I have around $300-$500 to spend. Any ideas on a good receiver and a set of speakers to go with it. Also, does a 6.1 receiver need a certain type of speaker set, or can you use regular 5.1 channel speakers and use another surround speaker for the back surround? Any hints or suggestions on a system would be great.