I currently have a Denon AVR3200 receiver and Energy eXL series speakers (eXL 25 towers up front, 16's in rear, S-8 sub, and eXL C for the center). The system is used 80%+ for HT. I am having a problem with the Denon and want to replace it. I have done some reading and like many, am having trouble deciding on a new reciever. I am considering the HK AVR635, the Yamaha RX-V1500 (or RX-V657/757) and the Pioneer VSX-1015TX. MY BUDGET IS ROUGHLY $500 to $700. Unfortunately, I don't have many options for auditioning these units due to living in a small town. I have heard the HK at Circuit City, but the speaker choices were fairly lame. I am leaning towards the HK unit due partially to its weight and reputation for being heavy, solid equipment. I would appreciate any comments or suggestions on the units listed above or any suggestions for others. Also, any suggestions for on-line purchasing would be appreciated. THANKS! PS -- Should I expect to hear much of an improvement in the sound stage produced by any of these units vs. my Denon?