Like RogerM, I am firmly on Planet Futaba. Yes you pay more, but you get lots more. Very accurate and reliable servos, good performance and no problems with the radio. Always have a good resale value and are easy to sell. I have never had one pack up on me in 35 years racing, and the 9602s I had before going 2.4/HRS were ten years old and still going strong in the car of the guy I sold it to.
Which probably puts the curse on my servo at the Plymouth National, but since I have said that many times before I remain hopeful!