I just upgraded from an ancient futaba S148 to a 1257tg in my b4.1 , and I can't believe the difference. It's so FAST!!!! Of course, anything would probably seem blazing fast compared to that servo, but still I am very very happy with the purchase. For what it's worth, I did not need a glitch buster, using a Tekin RS Pro with a Futaba 603FF receiver.