Every time I see these threads I have to laugh a little. I live and breath Turnigy servos, and have for a couple years. The reason I tried them is because I lost a fairly expensive model to a JR servo, and a buddy suggested using the much heralded Turnigy micro servo for a 55mm edf I had. I haven't looked back. I have them in my gassers, cheapo foamies, 90mm EDFs, and I will certainly use them in any jet I buy.
But often I get smirks and frowns from folks who look at my airplanes when I am setting up. A friend, who flies in the XFC, brought his competition airplane to the field to practice last year. He looked at my then new 30cc SBach which had Turnigy digital servos in it and told me I was crazy to use them. He touted his awesome HiTech coreless digital servos and boasted that he would use nothing else but them ever. When he powered up his airplane (after putting it together), one of the wing servos failed. He took it home, replaced it, came back a few days later, and a rudder servo failed- and the second one got stuck. Total loss.
Since switching to Turnigy- literally at least 100 servos- never had a failure. Ever. I know of at least four very expensive airplanes that are no longer with us due to "high end" HiTechs and JRs. In fact, the only servo other than Turnigy that I would use is a Savox because one of my used 55cc 3D airplanes came with them and they have been fantastic.
Rule of thumb for Turnigy: If it works out of the box with no binding, no grinding, no whining, and no smoking, it will work as good or better than any similar servo ten times the cost. My opinion.