I've been interested in getting my own stringing machine. I don't want to spend too much. I was looking at a cheap drop-weight machine, are these efficent? I just want to make sure they get the job done as well as any, even if I have to sacrifice time. Would it be better to get flying clamps or fixed clamps for this type of machine? What would you suggest? What's the difference? Can I replace flying clamps on something like a Gamma X-2 with fixed clamps? Thanks! Also, what's the advantage of "glide bar" clamps?