What resolution are you running on the Momitsu?
if you are only running 480p, you are wasting a good DVD player.
My Favorite resolution from my momitsu was 960p, however, I can't get my momitsu to reliably send that rez after turning it off and then on again, so for simplicity sake, I use 1080i. 720p is better than 1080i for DVD menus, BUT again, my momitsu will not do that after power cycling.
If your screen is 4x3, I think the Best rez is 768p (1024x768). my screen is 16x9, so I tend towards HDTV resolutions.
However, I must tell you, there is really no comparison between real HD (high bit rate), and DVD, even with the momitsu.