ACabo de leer que la nueva gama LCD (no LED de Samsung), concretamente la B650 :

The Samsung LE40B650's impressive video processing comes at a price unfortunately, and it's not good news for avid gamers. We measured the input lag on the LE40B650 to be around 84ms to 100ms slower than our resident Samsung F96 LED-backlit LCD TV (which had [Game Mode] enabled), which is almost as bad as the Philips 37PFL9632D (the worst in our database of reviewed HDTVs). Rock Band was basically unplayable unless we compensated for the input lag via the in-game calibration menu.
Fortunately, we could reduce the input lag on the Samsung LE40B650 to between 17ms and 34ms either by engaging [Game Mode] or using VGA connection (not a feasible option for the PS3, we know). While this amount of input lag is still higher than recent offerings from Sony and Sharp, whether or not you will be affected depends on your individual sensitivity, and the reflexes demanded by the particular game.
esperemos que la gama B7020 LED no sea del mismo tipo , porque teniendo en cuenta que la F96 ya tiene (creo recordar) 30 ms de retardo. sumados a los 100 de esta B650, serían 130 ms , vamos que unido a nuestros incréibles ADSL no mato ni un pijo

A ver cuando sale una review que compruebe este valor