If you have a Planet T5 already, then careful with using Mtronics ESCs. The do require some messing to centre the stick since the failsafe on T5 rx's were changed for flight reasons. There was a thread on here somewhere a while ago about this issue. It did cause me some problems one of which I have never fully overcome, and I still cant centre the throttle properly with one of my Mtronics Viper ESC so I make sure that I use Action now, but its all a matter of personal choice.