.......I'm a cynic for sure and usually doubt expensive products for their true worth. I usually take reviews with a grain of salt. However - after having some tone issues with my 335, and intonation issues w/my McCarty I bit the bullet and got the TonePros bridge and stop tail for my gibson, and wraparound for the PRS and am pleasantly surprised. Now I'm not saying it's "TonePros" that made the difference but I am saying it IS the locking system that they and other mfg.'s have that did. BOTH guitar's articulation and sustain have been audibly and notably increased. Notes jump out of the guitar, and even at the highest gain my Budda and winfield have, every string is defined!! The "dullness' I was experiencing on my 335 is non-existent and the intonation on the PRS is much better. All I'm saying here guys is - the LOCKING system works - TonePros seems to be quality although I don't think the stuff is made in USA which kind of bugs me. If you get a chance to try it on YOUR Guitar, I think you would be as surprised as I was! A word of caution - THIS WILL NOT MAKE YOU A BETTER PLAYER. YOU WILL NOT BECOME THE NEXT GUITAR god!! IN FACT, IT WILL MAKE YOUR FLUBBS STAND OUT MORE!!!(just my two cents) D.