I have been viewing this fantastic forum for weeks now and am ready to buy Denon 3802 or A11SR, I seriously need advice. Main difference (apart from £1100) appears to be THX ultra but (1) do you need to buy THX certified speakers? and (2) do many DVDs take advantage of THX? Furthermore: I thought B&W 603s (or equivalent Mission/JBL) would go nicely with the 3802. However if you spend the extra money on the A11SR do you really need better (THX certified?) speakers such as the CM series? I am not into Music HiFi that much, it is AV, the room is 7m by 6m softly furnished, and the TV and DVD player have not yet been purchased. I would appreciate your help!