blu-ray

According to this article on CEPro, HD-DVD is apparently preferred over Blu-Ray among new High-Definition buyers:
“Nearly one-third of non-HDTV households intend to purchase an HDTV in the next six months, and those who intend to buy are looking more “mainstream,” according to research from The Diffusion Group.
“HDTV intenders” who are also likely to purchase a [...]

CEPro has a great article on why you should skip the format war between HD-DVD and Blu-Ray video formats. According to them, the main reasons to skip the format war include:

The end of DRM

HD Downloads are here, skip buying a player

More HD channels are coming, especially from DirecTV

Physical media is going the way of the [...]