Note that there is a difference between LCD TV and HDTV - although you may have trouble finding much that isn't advertised as HDTV in the stores now.

Technically, an LCD TV doesn't necessarily have HDTV capability.

Conversely, an HDTV can be LCD or Plasma, or (more theoretically than actually) a couple of other "technologies."

A number of the previously best-rated plasma display makers have dropped plasma in recent months, going entirely to LCD. Once they run out of advertising blather to spout about it, it may be possible to find out whether there's a technical reason why LCD is being favored, or if it's just mfg cost and "saleability." (There are "opinions," but I've yet to see anything in the way of "in-depth analysis" of the relative benefits of the two technnologies.)

John