I have some tower hobbies ecash expiring soon and I'm thinking if something to get. Has the overall experience for the MIP puck system been positive for 17.5? I am also thinking of getting a full size servo to replace my futaba 9550 but I can't seem to find anything decent on towers site that has similar performance. I'll probably just stick with the futaba and add some weights to the front of the car, but I didn't know if there were other alternatives from tower (no savox) that might be worthwhile to consider.