DVI and HDMI support the same uncompressed video, upto 5Gbps. The only difference is that HDMI is somewhat smaller in size and can take in uncompressed sound as well.
I was told by a home theater pro. that the picture quality will be better using H.D.M.I cables Yes I know h.d.m.i. carries audio and vidio I also called Dish network about there new 211 empc receiver which has h.d.m.i. and they told me that the picture would be better than my old 811 system using d.v.i. output I have my d.v.d. player and dish 811 hooked up using a Gifin switcher and I plan to upgrade to a Sony VLPH-S51 projector which has h.d.m.i. input So should change everything to h.d.m.i. for a better picture ok you pros help me happy day to you all stewart