Our family is currently looking to purchase a large (55" or larger) digital RPTV to replace our old 53" Sony RPTV. I see a HDTV signal in BestBuy and I do not find it good at all. Why is this? I tried to calibrate a set as good as I can but it still sucked. In my opinion my DVD's now look much better on a 97 model Sony RPTV than this supposed HDTV signal does on a 65" Toshiba HDTV.