My dad has a Tosh 65 inch HD RPTV (two years old) and is using an interlaced DVD player (4 years old). I've read here and elsewhere that the fact that the Toshiba upconverts 480p signals to 520p may limit the improvement of using a progressive scan player. Is this true? Or will the new progressive player (RP-82, with Faroudja chip) represent an improvement? Thanks!