I have a couple of Bluebird servos and they have been great. I run them in TC and 4WD off road. No problems yet. You don't always get what you pay for with electronics. If they charged twice as much for these servos I'm sure plenty of people would think they were twice as good!

I run a capacitor in my receivers too. Its not the fault of the servo, its because the ESC BEC can't cope with the voltage drop that happens sometimes under hard acceleration with mod motors.

In touring cars especially you don't need the best servo, off-road mod is where you need all of the torque and speed. These seem fine

just my 2 pence

Ben