I have the following 6.1 speaker set up (in the process of acquiring all these speakers): - Fronts: JBL S310II 10" floorstanding speakers - Center: JBL S-CenterII - Surround (x3): JBL S36II - HSU STF-2 10" down firing 200 watt subwoofer I am in the market for a receiver, mid-to-high end and I've pretty much narrowed down my list to the following models: - Yamaha RX-V2400 (or RX-V1400) - Denon 3803 - Harman Kardon AVR630 (or AVR525) I know most people will say "audition every receiver and choose what sounds best to you", but unfortunately that is quite difficult to accomplish in Canada, much worse in Montreal. The issue is that in Montreal particularly, only certain stores carry certain brands; for example, if one store carries Denon receivers, it probably won't carry H/K or Yamaha, etc. which makes it very difficult to compare receivers back-to-back. I am waiting until I have all my speakers set up and installed and then I will try to go out and purchase each of the receivers on my list and try it out with my speakers to see what sounds best, and return whatever I don't think sounds good, but before I do that I'd like to get as much input about the various contenders as possible, so all the help is much appreciated. By the way, I think the YPAO feature on the Yamaha receiver(s) may be a selling point for me, so is it really worth it?