Hi guys got the 685's and the HTM 62 set up now and i must admit they sound awesome watching the Special Extended Edition of the FOTR awesome. My dilema is when I was buying the 685's the salesman said that my current AMP the Onkyo 605 was not powerfull enough for the speakers and I would get more out of them with a better amp. Looking at the spec's the 605 is rated at 140W and the speakers recommend 100W so surelly it is powerful enough? Would i get a massive improvment in the speakers if i upgrade to a Yamaha RXV1900/3900 or a Pioneer SCLX71/81? Im mainly watching dvds and Bluray from PS3. Any advise appreciated.