I'm looking to upgrade to a 6.1 receiver for my home theater and would like suggestions on the best receiver to be paired with the Klipsch Reference 3 series speakers. I've heard that some receivers can be "brighter" than others (similar to speakers) and this should be taken into consideration when selecting a receiver. Supposedly the Klipsch speakers are already "bright" sounding, which I like, but I'm afraid that when combined with a "bright" sounding receiver, it may be a little too much. Use is 90% HT, 10% music. I've read good things about Denon, Marantz, Yamaha, Outlaw, and Pioneer. I'm looking to spend around $500 and wouldn't mind picking up a good used one to get a little more than buying new. Suggestions??? btw - I'm currently running a Marantz SR7000 receiver and like the sound.