The unfortunate thing is that eventually, we all will be forced to choose. They're going to phase out the "basic" DVD eventually in favor of the Blu-Ray or HD-DVD technology. The makers of these technologies seem to think that EVERYONE has an HD-TV today, which simply isn't true. (I don't have one, and as long as I don't have one, that means that not everyone has one.)
However, here's some food-for-thought. Think about who is backing each technology. You have Microsoft backing the HD-DVD, and you have Sony backing Blu-Ray. Naturally, Sony is going to prevail. Microsoft simply isn't innovative enough to handle something like this. Microsoft is historically known for coming in "after the fact," meaning, copying someone else's technology and using it a year or two after it already came out. For something like this, you need a truly innovative company to back the technology.
Plus, who wants to pay Microsoft's prices for anything?