I need some help picking out amps for a new system I'm assembling. I'm most likely going to be using a Newcastle R-863 as a processor. I'm setting the room up for 7.1, so I need amps for the main channels. It's a fairly large room, and the budget is kind of low....between $1500 - $2000 depending on how much I spend on the reciever/processor. I think I can get the 863 for about $1000. The speakers on this system will be PSB all around. Image series, 5T in the front, 9C center, 10S side and 2B as rears. Any suggestions?