Hi, this is my first post on the forum. Thanks for having me! Recently, I've gotten the urge to upgrade my audio system. I use it about 50/50 audio/video. It's currently composed of a Yamaha RXV-592 receiver, NHT 2.5i fronts, NHT SuperZERO XU center, JBL 12" PB12 sub, and a pair of NHT SuperZERO's for the rears. At some point in the future I plan on upgrading the center and rears. Most immediatley I'm going to purchase an Amplifier. The Yamaha I've got only outputs something like 75 watts to the front, 75 to the center, and 35 to the rears. I plan on using my current receiver as a pre-amp for a little while. So any ideas on what 5 channel AMP would be a good match for NHT speakers and priced at about $500 to $800 used?