A year ago it looked like HD DVD had the advantages. Today it looks like Blu-ray is winning the war over HD DVD. HD DVD players are still less expensive, but more studios have signed up with Blu-ray. The driver has become the release of the hotter movies on the Blu-ray format. If both technologies survive, I suspect that you will find all of the studios eventually using both formats. If dual format players become cheap enough, Blu-ray will lose some of its current lead.