When I record guitars for one of my bands, we move around a ton. One thing I did to lessen the noise from my tracks was to lift my fingers up just enough when moving to where they didn't touch the strings. Now, if you're playing fast stuff, it's going to be difficult to get this down. But it's well worth it. We move around pretty fast, so I had to practice this method quit a bit before getting it just right. Anyway, yes, it boils down to a guitarist's technique. It's not the amount of gain, it's not the amp, the guitar, the strings, anything. It's the hands. Cheers.
~006