So HDMI is Better than DVI?
In a word, yes. Just remember that it really isn’t better quality, but features, that make it better. If you won’t be using those features, there isn’t really a difference. In terms of compatibility and future proofing, HDMI is replacing DVI in the home theatre. DVI is still dominant in PCs, but monitors with both types of input as well as graphics cards or laptops with both outputs are increasingly common.
This is reflected in the extra features of HDMI being largely on the home theatre side. If you are shopping on that side, or for components for a home theatre PC, then those features are probably more attractive, and you should consider restricting your selections to those with HDMI.
If you are buying a computer and don’t plan any home theatre integration, equipment with HDMI and DVI is a great choice from a just in case perspective, but don’t shell out extra cash for it.
Whichever you are buying, the ace in your sleeve is that HDMI and DVI play nicely together. A simple adapter will take care of the video signal, though you will loose HDMI’s audio and other fancy features.