This.

Also, I run the HXT servos (both kinds) in nearly all my sport planes, and have never had a failure in a few hundred flights. I've saved a lot of money doing this, however it's not for everyone. I recommend you spend 2 mins and do your own QA with any cheap servos. 90% of the time you'll find the issue visually before it arises in flight. I don't recommend going cheap to most people, but for me, I've had 0 problems.