As stated above, servo's are a debatable item. I said savox because I own them and can tell you from experience they are a good middle of the road servo for the money. Noisey, but strong. I recently replaced one of my savox with a radiopost. WOW, super quiet and lightening fast, but I have no real runtime with it yet so I won't recomend something I haven't used yet. If it stands the test of time, they will be awesome servo's....