in a moment of madness, I purchased a Hitachi 46f510 46inch widescreen HDTV. This is my first ever real TV purchase. I can't wait to set it up

Anyway, the TV has a built-in upconverter to either 540P or 1080i. My DVD player currently gives a max of 480P (which it can upconvert to 540P). I could buy a 720P player and plug that in, however, would the picture quality be that much better? Is it worth spending that much on a new player?