I've been a long time fan boy if Faber's hardware, and used all their locking stuff on all my own LP's and builds. But for some reason on this latest one I decided to try a Kluson no-wire ABR-1, thinking they'd have to be damn close. I was majorly let down . . . Guitar was bright, sustain killed me, and there was SO much rattling. So I ordered a Faber Locking ABR-1, and put it on today. HOLY CRAP. Instantly the guitar was fuller, definitely a hair more sustain, and no more rattle. Solid as a rock. That was a HUGE waste of time . . . Anyone else had better luck with their Kluson?