Just keep in mind that liquid crystal HD TVs are NOT repairable, but the larger (non-slim/non-liquid crystal) HD TVs are repairable.
I talked to a local Sear's store manager I know. He's a nice guy and I would trust his advice.
By the way, the correct technical term for what happen on the screen to Bush's tie is called a 'rainbow effect', you get this same type of problem sometimes on DVD movies, but it is rare for it to be that bad.