I'm not trying to rip anyone for running a 357 in their 1/8. I just don't want people to waste money on something that will probably not last nearly as long as the right servo. Also in my experience you need some torque and not too fast on the throttle servo. I run the Futaba 9350 because they last. They are .12s and 139oz at 6v. I would say a Futaba .12s is just as fast as an Airtronics .10s servo.
I keep hearing good things about the Ace servos but I have not tried one yet. I do know some Futaba parts will fit on some Ace servos so there must be some relation there.