Well here's the list: I have an HS-5925MG that went away in my TA04 at the Tamiya race in Penn. An HS-605BB went away in my F1 At the TCS race in WI. An HS-5925MG that was my throttle servo. An HS-300 that broke in a Losi XXXT MF truck. A HS- 615MG and an HS-605MG as well from a Kinwald Buggy and a touring car. Don't get me wrong when they work they work good, but it gets expensive replacing a servo at the track when you don't have a good selection to get a good servo.