It is interesting how some people notice a real contrast between regular and HD. I am one of those who doesn’t see it. Friend of mine gave me a Blu-Ray player and set the whole thing up and exclaimed, “You won’t believe the difference!” So he popped in a Blu-Ray disc and was practically jumping up and down at how awesome the picture was. “Is that great or what?” “Wow, that’s cool!,” I replied as I pretended to notice a diffference.
(shrug)
I just don’t see it. But then, I don’t much give a crap about “crystal clarity” as long as the story and acting are good and the picture is reasonably clear and steady. Heck, I still enjoy grainy old black-and-white films just fine, too. To each his own, I guess.
I think Sears or somebody has a two pair for the price of one on this week, may I suggest you visit their optometrist.
I have a 55 inch TV I am using for a computer monitor, just visit a few YouTube links and set the resolution as you like, if you don't see the difference then you are functionally blind and should not drive a car. :)
Some depends on the native resolution of the TV. I have a Panasonic PT-50LC13, pushing 10 years now. It displays everything in 720p, a 1080i signal is good but not really any better. Where it really shines is watching sports on an over the air signal when the source material is also 720p. Even my eyes can tell the difference then.