I recently purchased the Phantom Menace DVD and it had a THX set-up feature for video (I believe T2 also had one though not as good) that I decided to try out. In my opinion, the resulting picture I achieved using the THX video set-up was superior to the one provided by avia for my 32" RCA. I also think that it was simpler to use and interpret the final result as optimized. This would certainly make me think twice about using the Avia disk to set up my video. Has anyone else had similar thoughts?