I bought these after going I to the store to buy a different brand. The sales associate talked me into these tuners. I put these on a custom guitar I was building with tremolo. Tuners were not something I thought about when building the guitar, as I did not know about Ratio tuners. These lock up nice and hold tune very well. The different gear ratio makes tuning very easy and you have the same amount of turns as every string. I am glad I went with these tuners and would recommend them to anyone. I do wish a drill jig, or template would have been available as the posts are a little hard to drill for and get right.