+ the newer one's will have a better image, too. Is your player even progressive?
I have a Toshiba DVD player that's about 4 years old. In the last year or so, we've rented a few DVDs and the player can't play them. It's not the DVD because we tried them in a friend's DVD player and they play fine. The DVDs are not Blu-ray or HD-DVDs, though one we rented said that it was remastered for HD on the back, but they did not have that blue or red plastic case to indicate that they were Blu-ray or HD. They are also not DVD+/-R's or RWs, just regular movie DVDs.
The DVD player plays some DVDs, but more and more some of the newer DVDs don't work. Are some of the newer DVDs being made/formatted differently in a way that my old DVD player can't read, or what? Am I just going to have to get a new DVD player, so I can play these newer DVDs?