Hey guys, I've got a Onkyo HT-S790. Its still kicking hard with my 5.1 setup (I'll be adding the other 2 speakers in a couple days for 7.1). I'd like to know if you guys think I should upgrade my receiver and/or speakers and/or sub? I have a PS3 and 360 running and all going to my 52" Sony XBR5. I haven't been on top of things so I don't know whats out there now. Is there any reason for me to upgrade at this time?