I think this is the right place for this post. I have a wraith with a ae-2 (servo) that is wearing out, time to upgrade. I also have a SCX10 with the tactic 45 servo. Not looking to spend to much on servos, i have to stay on budget. I don't do a lot of high speed/ bashing. would the newer tactic 57 be good enough, and is a bec necessary?