Hi everyone, I'm starting to put together a dedicated home theater room (17'x25') and need help on deciding on a power amplifier to drive my Definitive Technology St fronts, Mythos 10 Center and also need help with deciding on in ceiling surrounds. I have a Def Tech Supercube I sub as well. System will initially be 5.1 initally if i purchase any of these amps but plan to expand to 7.1 with a two channel amp. I'm able to get the Anthem mca-50, outlaw 7500, & Krell showcase 5 for all around the same price. Used. I think I have made up my mind on the processor being a Marantz AV7005 but open for suggestions on that as well. Any advice would be greatly appreciated! Thanks.