A few things I learned quickly was that I paid no attention whatsoever to sound insulation and I shouldn't have mounted my center channel above the screen. Since then I have also used the trade up program for the 350 Sub and the QS8 surrounds. I am now shopping for a new receiver to power the system. I have enjoyed Yamaha recently mostly for the ease of use. I used Denon in this theater but really hated the sytem menus.