I've bought those Locking Tuners after looking at Phil McKnight (from Know Your Gear fame) Sharpen my Axe video. To say that he installed those tuners on numerous guitars, and that he certified of their quality was an understatement.
I disliked my cheap Schecter tuners on my guitar, so I said, why not give it a go? And after only a few hours, the tuning stability of the instrument is better, tuning is easier, and much less rattling when tuning.
I really like it, and frankly now that I am spoiled with Locking Tuners, I will never ever go back to non-locking tuners