Maybe someone can correct me ... I find that digital servos are not something we really need, I mean what for digital, the new analog servos are good enough. They center well and will hold properly. I seem to think that digital servos are only good when you have the programmer and want to program the servo for whatever purpose that you need it for. Is there any truth that analog servos last longer?

Get the 645s ... it will take you much further than the 635.