Some of the proprietary THX processing modes are valueable, but I still think that the "peace of mind" offered by THX certification as far as build quality and spec'd performance is less of a factor today than it was ten years ago. The first cost required for certification is going to have an impact on cost, and there are a good assortment of companies that offer affordable gear at a performance level that is on par with THX certified gear. Sure, you have to invest some time doing your research, but as you proved today that can still be necessary anyway - and I'd suggest that it be done regardless of THX logos for something as expensive as a surround receiver like this.