I think I narrowed it down to four. The Yamaha RX-A2020, the Integra DTR-40.4, the Marantz Sr7007, and the Denon AVR3313CI. I know the Denon and Marantz are the same company, and offer almost the same guts. Is there a reason to choose one over the other? And, out of those two, what would be good...