Microsoft claims that there isn't as much of a difference in the capacity of Blu-Ray and HD-DVD as Sony would like for you to beleive. The higher capacity was only acheived in test conditions in a lab and isn't really possible for real-life use. Of course, they are now backing HD-DVD, so both sides in this aren't too credible, I guess. The best idea I saw was a player planned by Samsung, I think, that will be dual format and read both HD-DVD and Blu-Ray. Sounds like a solution to me. At least whichever format wins, your player will support it.