I have only one winder - the Planet Waves Pro Winder. Changed strings on two guitars this weekend, including 12-string slothead, and I found it quite fiddly as it did not stick well to the tuner knobs. So I ended up turning a lot of the knobs by hand without tool. It also squeaked like hell when I turned it fast to loosen the strings. If I read about a better tool here I might go for it.