Here's the ho-hum pedestrian question you guys probably get asked all the time here, but since I didn't know where else to look on the forum specifically regarding this, I'll ask anyway and hope you can stomach answering it one more time: With $500 to spend on a decent receiver, which would you choose: Denon, Yamaha, Harmon Kardon, or something else? And why? I guess I should ask, what are the primary sonic differences between these brands at the same pricepoint? What makes one slightly better than the other? I know this is all somewhat subjective, but I'm sure a lot of your feelings are rooted in reality (like one is brighter than another, or one is more natural sounding, etc.). I'll be using it for 2-channel audio and 5.1 surround, and want the most natural sound I can get.