I bought this locking tremolo for a strat that I'm making and I gotta say, I'm happy with my choice.
The Schaller Lockmeister is a good and reliable product, probably one of the best floyd rose type models out there. Like all tremolos of this kind, its setup takes some time and patience, but once it's done the tuning stays perfect forever.
I just wished it came with a manual or some sort of guide to help the user to setup the tremolo properly.
If you already have a guitar with a floyd rose, but a cheap and bad one and you are looking for an upgrade, the Lockmeister is the right choice. FYI the holes for the mounting studs must be 10mm and not 9mm like a lot of the floyd rose's out there.
This is not the best floyd rose type of model there is, but for its price it's the best. If you want a better one don't expect to pay less than 300?. It's german manufactured so you know that the quality is top notch!