I've had my 60" Sony SXRD for about 2 years, and have had no issues. However, as I posted in another thread, there are more than one class-action lawsuits against Sony for knowingly selling TV's with faulty Opitical Blocks. They have since extended the warranty on almost all of their SXRD models. I'm still very happy with the amazing picture quality of my Sony SXRD.
A friend/neighbor of mine is a TV Tech, and he swears by Samsung. I've never owned one, but that will likely be my next TV. The new Samsgun LED is AMAZING. Just a shade over an inch thick, IIRC. And a picture that is second-to-none, IMHO.
I guess it all depends on the money you're willing to spend. When it comes to TV's, you DO get what you pay for in most cases.