I don't know of any LED projectors out right now. They are supposed to be coming though. I know that the first generation Samsung LED DLP rear projection tv had problems with unifomly lighting the screen. It was bright in the center and then dim as you radially move outward. I bet that they will fix this within the next couple generations though. Taking this into account it will probably be at least three or four years until LED front projectors are implemented well. I guess that I didn't answer your question did I. It would be a nice thing if they did have the same brightness until they burn out though.
- Nick
