THX2 should not be a deciding factor........in the least. Some of the best gear on the planet doesn't carry the THX logo.

All I'm saying is I have owned them both and they are two completely different animals. Pull up the specs on the 1015 and the 3805 including the vast array of cross over settings in the 3805 and it's not hard to tell which one is more feature packed. I’m not saying better, but there are differences.

Costco by the way had no Denon or HK products at all. If there coming out my way, they are not here yet.