moreira85,
When I checked out the LED versions in person (helping my brother shop around last year), they run pretty hot at the vents. Can't quite recall, but the fans might've been louder too. Perhaps a non-issue, but depending on the room acoustics and how close you sit, the noise floor might be raised a little.
Also, one peeve of mine with Sammy RPs is that they have the IR sensor smack dab in the middle. So if you actually place your center speaker on top of the Plateau stand (which is better than shoved on the shelf below), you won't get to control your TV with the remote.
My brother's center speaker is off set to the right! There was a pic in the members gallery here that had a similiar setup before an upgrade.
You CAN get around this, by getting a $75 URC rf-20 remote. Run a stick on emitter to the IR, then cover all that with the center speaker. Such a remote is high on the list for gift ideas to my brother. His bday is this month . . .
FYI.