I just scored a pair of vintage Polk Monitor 12 tower speakers, which I have not yet picked up; I paid a ridiculous price for them, but it's all good. I have coveted a pair of these babies for decades! They're much harder to find than other speakers in the Monitor series. I currently have a pair of Monitor 10's that I am running with a Denon DRA-825R receiver through a Parasound HCA-1000 power amp. My music source is an iPod Classic. My living room is large (17x24) and we do have our 55-inch flat-screen hooked up to the system as well. Should I use my current set-up for the 12's? I've compared the numbers, and what I have now should power them ok I hope. I like to throttle up Pink Floyd every now and then lol. OR, should I replace the receiver and amp with a 5-channel set-up and use my 10's as the back channels? If so, I'd love to hear some suggestions on what I need to look for. I'd like to stay with Denon and Parasound if possible. Thanks in advance for your input!