The issue with Min-Etune is that the gears would strip.
If that happens, you're SOL until you can replace the tuner/servo.
While it works, Min-Etune is very cool.
Especially nice if you're playing live and having to move to/from drop-D (reason I had it).
One of the gears stripped on me... and I was done.
The locking Grover Tuners are excellent. Put those back on... and just tune manually.