I used to run a 94358 for steering in my truggy and didn't have any failures.

Then I bought the 94780 for steering and moved the 94358 to the throttle brake position and it went out really quick. I learned the hard way that the air servos are a little taller than most and in the losi it was hitting the chassis which caused the failure. So make sure you use the spacer on the Losi.

As far as the 94780 it is a decent performer. I did have a case crack but they replaced the servo no questions asked at my LHS. Since then it has seen regular use and has developed some slop. I don't think it is brushless and I also don't think it is lipo direct capable (that matters to some)

By the way I have switched to Hitec 7955 in buggy and am using another 7955 in truggy as the throttle/brake until the 94780 dies.