Well, most people will notice that the set is HDTV ready and that's good enough for them.
All HD movies are shot in 1080p 24 fps per second so if your player or HDTV set only accepts 1080p 60 fps, it has to perform a process known as 3:2 pull-down (or reverse 2:3 pull-down) so that the movie runs at 1080p 24 fps. This process will often result in motion judder in fast movie or sport scenes, like not smooth and laggy. This do happen to normal dvds running in progressive scan mode on a cheap dvd player with an inferior deinterlacing chip. For HD movies, if you can get the player to output at 1080p 24 fps and with your display capable of accepting 1080p 24 fps, no pull-down process will be involved so you'll be getting a much clear and smoother picture. Currently, most blu-ray and hd-dvd players output at 1080p 60fps except for Pioneer's blu-ray player, it is capable to output at 1080p 24 fps but that baby costs a bomb. For the PS3, XBOX 360, high end pcs with HDMI output, they can output at 1080p 60fps because most games are running at 60fps so no pull-down conversation is needed, except for movies.
Currently, getting a display capable of doing 1080p is not future ready yet until they're able to do accept 1080p 24 fps and also 100% HDMI v1.3 compliant, able to output in 36-bit colour (currently not possible with LCD tvs). Hopefully, that's about it for the HD format as there might be other newer things that might pop up in a year or two but I can prefer much say that we're safer to watch our dvd movies on an upscale dvd player, at least the dvd technology has matured and there won't be anymore addition changes to it for good.
To most people, expensive means better so if Proton Perdana is more expensive than Toyota Vios, that means a Perdana is better.

That's why there are a lot of waterfish out there, people lack the product knowledge, they can't simply buy something based on the price tag, brand or those marketing gimmicks / hype. That's a big no no when shopping for the stuff that you want.
Nice explaination there bro. Now I know why the screen is jittery when it moves. When I was in ESH electrical shop few months back, one of the salesman was promoting a Philips model that can produce a smooth screen. He played the same movie on 4 LCDs at the same time tested it in front of us. And yeah... it was smooth compared to others.