Well I hope I upgraded my sound system by making this purchase. I did have a Sony STRDE345(I know, my stupidity in not knowing HT). I am using the included speaker package that came with the Sony DE345. I plan on using my 65hx81 speakers as my center and wondered if this is wise? And if someone could recommend any speakers that would complement my new receiver, it would be greatly appreciated. This forum has really been helpful in setting up my HT and I am learning what I thought was decent actually was pretty poor. Thanks!