I recently got my copy. I think it will be very useful, as long as it's used in the proper context. Those who would use it in lieu of legitimate training with a qualified instructor are just fooling themselves, but it does have considerable value nonetheless. And it is a very slick and versatile package, and a LOT of bang for 50 bucks. I hope that a feature will be built-in allowing "plug-in" of additional techniques, should the library be increased in the future.