I've had one of the N52s and before it the N50. The N50 was a great innovation, T N52 was building on the best available. However My N52 has had a problem with the lower button since purchase. The thumb button (the one down by the lights) Sticks and does not activate correctly 90% of the time (Sticks or won't press). I still use my pad greatly, but I just maneuver around the button and removed all programming for it (one I left it activating a button by accident and accidentally hit it and it stuck me casting like crazy till I realized it was stuck)