Tom's Hardware does DVD replacements

Tom's HW has a good article (for a change) on successors to DVD:
http://www.tomshardware.com/business...616/index.html

The way HD-dvd revokes keys will be an issue.
I think more than two layers is more difficult than they propose.

Most articles seems to focus on the video aspects.
Computer users will want the better technology, which seems to be blu-ray.
It has 25GB per layer, vs 15GB for HD-dvd,
which is important as writable media will usually be single layer.