I use to use the 145 but I had 3 of them go bad on me....1 just quit working and the other 2 would just loose all hope of finding center or holding trim after about a month of use. I went to the 9650 and have never looked back it trims well and has held up so far. A few guys locally run the KO servos and they seem to work very well along with JR servos. The only servo in 12th scale that I have had issues with or seen other people have issues with was the 145...thats not to say its bad but I wont buy another one.