I just got the Onkyo TX-SR-600 and I am very unhappy with it. There is no way this receiver pushes 80watts RMS, and music just sounds completely flat (don't know how else to describe it). The system is for music as well as HT. I'm using Onkyo HTS-500 5.1 surround speakers. My room is fairly large, probably 15'x24' (open floor plan, living room, dining area and kitchen all open to each other). I just finished a subjective test with my 17 year old Onkyo receiver (obviously designed just for music). I tested the 17 year old Onkyo receiver (TX-61) as well as the new Onkyo receiver (TX-SR 600) with the front speakers from the new Onkyo 5.1 speaker set (HTS-500). The 17 year old Onkyo receiver (which was only rated at at about 60 watts per channel) blew away the TX-SR600 (which is rated at 80 watts per channel). Even my wife noticed the difference. Is this what I should expect from all AV receivers in the $600 price range? Does this sound right? Again, I don't know how else to explain it other than the TX-SR600 produces extremely flat sounding music, with no depth, and lousy clarity/fidelity (especially at any low to moderate volume). I am most interested in how pleasing music sounds to the ear, not necessarily how "uncolored" the music reproduction is. I have heard very high end systems that boast true uncolored music reproduction, that are just not enjoyable to listen to. Maybe my taste requires an AV receiver that has more bass management capabilities? Any suggestions on any other receivers around the $600 price point would be greatly appreciated.