I've only been able to get my action so low, the neck is a little curved and the frets are quite thick. I've considered getting them redressed or whatever. I was playing a Mexican Fat Strat today, and it had ridiculously low action. It played like a Shred guitar. The thing is, that action almost felt kind of uncomfortable compared to my Jag. But at the same time, I could play crazy fast nonsense and it was a lot of fun(not really a shredder as such, but I do like playing fast). I'm considering getting a proper adjustable height roller bridge for my Jag(though the TOM has been filed down fairly well) and getting the frets dressed, but it'll cost a lot and I don't know if it's worth it if I enjoy the guitar as is. But I do like the idea of being able to play faster. I have a second guitar, a First Act Sheena, which is surprisingly good with quite low action. I might just keep that as my fast playing guitar. Suggestions?