I use self mcaniques Sperzel blocks for two years. These models are simply the best I've had the opportunity to test. I have a possible strat modified les paul and a Japanese. The tuning is much better than the original MODELS (fender and ibanez), more editing is a breeze! MODELS of solid, practical, in a nutshell: IDAL! Can be a bit expensive for mcaniques but hey, it's an investment for the future ..