I've crashed many of the cheap SG5010's ( $8.00/ea ) without EVER stripping a gear on one nor ruining a servo.

At that price I wouldn't have cared anyway, but they've held up well.

For me, most of the standard size and up JR and Futaba's also have too...

The servos that have faired worst for me have been the Hitecs.... Not awful, but not as well as the others.