Personally, there are a number of issues I'm watching keeping an eye on and those are why I haven't bought an HDTV(yet).
No HD support for DVDs yet. There are 2 competing formats right now, so we are going to have a replay of the Beta v VHS, called Blu-Ray v HD-DVD. With a progressive scan DVD player you can get great looking picture from current DVDs, but the HD information isn't actually there.
New screen technology. Plasma v LCD v Rear projection v front projection v DLP v CRT v LCOS v OLED v whatever is just around the corner. I don't think you can go "wrong" with any of them but sharper/brighter pictures are coming out every month, and prices are still dropping.
Copyright issues. The US networks are requesting draconian measures to protecting their content. If they succeed in forcing manufacturers to include these protections I can't see equipment manufacturers offering units without this protection to the Canadian market, and the current proposed system would downgrade the signal on units without the protection (including current units - no grandfathering). No HDCP? No HDTV!
All that said, I would love to get HDTV. My techie nature is pushing hard; I watch the Superbowl at a friends place on his 54" HDTV and it was great. So while I think my reasons for waiting are valid, I'm not sure how much longer I can hold out.
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"The problem with any ideology is that it gives the answer before you look at the evidence."
—Bill Clinton
"The greatest obstacle to discovery is not ignorance--it is the illusion of knowledge."
—Daniel J. Boorstin, historian, former Librarian of Congress
"But the Senator, while insisting he was not intoxicated, could not explain his nudity"
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