It's not an LED TV!! Do you refer to the "old LCD" as a CCFL TV? It's an LCD with an LED light source, but it's still an LCD. Period. Christ, that is so annoying.
And no, all LED based LCD's are not better than a traditional CCFL LCD across the board. The majority of the LED LCD's are edge lit, and they're junk. If you are hell bent on purchasing an LED based LCD, a full array LED backlit LCD is the only way to go. That is the only type of LCD that can come anywhere close to competing with a plasma's black level. And the 2 currently on the market are Sony's HX950 and Sharp's Elite X5FD, both are priced MUCH higher than a comping plasma.
Secondly, motion is still an issue with even the best LCD's. Even the average Joe Blow can see the difference. Some don't mind it, others hate it. Personally, I can't stand it (I'm somewhat of a purist). My wife is no technical guru when it comes to TV's (hell, she couldn't tell you the difference between an LCD or a plasma), but when she sees a movie playing on an LCD in the store, she immediately makes the comment, "hey, it's doing that weird thing." She doesn't know the technical term for it (frame interpolation), but she knows it doesn't look like it should and hates it. Sure you can turn down the settings to reduce the effect, but then you just unmask the LCD's true issue with motion.
These stupid reasons for buying an LCD (weight, power savings, thinness, apps) are just marketing gimmicks to get people to look past what should be the most important aspect of an HDTV, picture quality and performance. That's where most fail, and why LCD manufactures have to use these stupid marketing gimmicks to get the general public to buy in. And apparently it's a GREAT strategy, because it's working.
And just a side note, one of the best LCD's ever produced was Sony's XBR8, which was a fully backlit RGB LED set. Fantastic LCD. Too bad it was just too expensive to keep producing. Oh, and it was one of the thickest flat panels I've ever seen at almost half a foot deep.