Re: Earvana or Graptech
They DO produce the locking nut version now. It is a drop-in retrofit for an R3 (1 11/16") nut, and comes with hardware to top or bottom mount it.
I have been a partner with Earvana for 2 years now, and couldn't be happier with the product. Bear in mind that I do not receive money or discounts for endorsing them--I came to my conclusions by trying out the nut and loving the results. I have put them on all my non-Floyds, and one day may have to try the new locking nut on my RGs.
The comparison with BFTS is a bit lopsided in my view. I have tried BFTS-equipped guitars, and read many reviews, and I will say this much about the Buzz Feiten Tuning System: It has become a cult. It was an interesting idea, but the execution leaves a bit to be desired. Installation requires cutting back the fretboard and drinking lots of Kool-Aid. The results are a moderate improvement in intonation consistency, but nowhere near the hype.
The real bonus of the BFTS is its snobbery. At the risk of pissing off the Fender fans out there, I will compare BFTS to Fender.
Fender makes low-quality guitars by DESIGN. Leo designed the Tele and Strat around existing lumber dimensions and easy repeatability in construction (good BUSINESS decision--did nothing for instrument quality). After the templates were made, an 8-year-old with ADHD could run the assembly line. The "Fender Synchronized Tremelo" was innovative in 1954. And the single coil pickups produced sound. But once Seth Lover invented the humbucker, and Floyd Rose took trem operation to a new level, Fenders were COMPLETELY obsolete and inferior. So the Fender-lovers dug in. They defend Fenders based on the most ridiculous criteria, and try to convince others to love the terrible sounds they make, by promoting them as BETTER. "Come on, man...what sounds better than an awesome vintage 50's Strat neck pickup?" "Everything else. Like a parts-bin 80's BC Rich NJ humbucker." (actual conversation) To be fair, the guy hated Ibanez, so he may have been mentally challenged. Those sour grapes taste bad.
Or to put it another way: once Ibanez invented the RG570--the ultimate optimization of the Fender Stratocaster, improved in every possible way--why do they still make Fender Stratocasters? Because Jimi Hendrix played one.
The point is that I believe that BFTS is inferior to Earvana in every way (component cost, installation cost, permanent instrument modification, tuning setup, and performance), but the BFTS fans just dig in. The Earvana nut is a better product, and BFTS is obsolete, but its adherents refuse to allow it.
In response to the earlier posts regarding string breakage:
The Earvana nut is composed of a proprietary material that mimics the best qualities of bone and graphite. I have never broken a string at the nut (3 years of playing on it), tone is good, and the grooves are slippery. Earvana>GraphTech.