Just came home with RB-1080!!! Dealer called and said it was there (had to be special ordered) and went to pick it up. Swaped for no extra cost with my recently purchased Rb-1070. Just hooked it up.... at the first ten minutes I don't notice any difference in quality with 1070, just a kind of "better overall feeling for the sound". Actually I was not expecting any huge difference. Also plays louder and "fuller" even for lower volume level. It is definitely bigger, heavier, and this one has THX logo in front. I will keep you posted!!!