Originally Posted by conquistador
My DVD player (Sony DVP-NS710H/B) doesn't have a 576p mode, just 480p, 720p, and 1080p. I couldn't detect any differences between them. I guess this means the TV's scaler is as good as my DVD player's, or my eye just isn't sophisticated enough. I noticed only a minor improvement when comparing the upscaling player to my 8-year-old, non-upscaling, non-progressive DVD player.
I'm sorry, I forgot that most of you are living in U.S.
576p is the SD PAL standard we have in most countries of Europe. The equivalent SD in the U.S. (and not only) is the 480p, so you should use that one on these HD Ready displays.
Of course you will be never wrong by buying BDs instead of DVDs, but you will get the best results only with a 1080p display, and by watching it from the right viewing distance. Thinking in the long run, it is better to start to buy BDs, because I guess the next HDTV upgrade for many of us, in about 3-4 years, will be a full-HD display in any case.