I've had the same experience with the Ibanez Edge trem system on an Ibanez JS model. Rock solid, stays in tune for months- The guitar doesn't get much playing time anymore but is in tune every time I pull it out of the case to apologize.I hear alot about Floyd Rose terms not staying in tune. Most all my guitars have them. They are full floating and I never have any problem with them once the strings settle in. Always in tune and intimated. But, they are all German made real Floys Rose trems. I think that is the difference. The Licensened ones and the copies just don't cut it.