Never broke a servo in my SX2, nice and direct steering
Only servo I have broken was in a B4 with the servo saver glued up.
It's also a case of matching the right servo to the car
Savox 1258 perfect in the SV and SX, 1251 perfect in the TRF511, Sanwa perfect in the 410R
Savox 1257 perfect in the Losi XXCR Kinwald