Alright I know people ask this question a lot. Which one do I get, the "pci" or the "pc plus". I have a Denon 1804 running "Phantoms", CC-170's front and rear (surround), and "Atoms" running surrounds. (6.1) My room is 21 feet 8 inches long and 11 feet 3 inches wide with 9 foot ceilings. I have my equipment running long ways through the room. I have 6 feet of space directly behind me on the couch. I will locate the sub directly behind me or to the right in the corner. It will be close to my seating position. Should I get the PCI or the PC-Plus. Do I really need the 525 watts. I know I'm a guy and I want it but...do I need it?