There's a huge difference between bluray and DVD, even on a 720P set. Wider color gaumet and sharper picture are two of the major differences. A 1080P plasma will of course, be a little sharper with bluray. Do a search for "720P vs 1080P" and look through all the debates and great info. I've got a sony bluray player and a 720P Pioneer Elite plasma, and I'm still floored everytime I pop a bluray in. I can barely stand to watch a standard dvd anymore. I've been spoiled.