I think you are a little confused on the names so let me help you to understand.
Blu-Ray is an optical disc storage media format. Its main uses are high-definition video and data storage. The disc has the same dimensions as a standard DVD or CD.
HD DVD is pretty much the same thing as Blu-Ray its just another competitor in the high definition video market.
HDTV is a high definition television set. That you would play your high defintion video's on.
To view a Blu-Ray disc or HD DVD disc properly you will need an HDTV.
now recently Blu-Ray won the High Def video war and is now being accepted as the standard for HD Discs. So while you can find a HD DVD player for cheaper than a Blu-Ray player please make note that HD DVD players and DVDs are being discontinued.



