I've used all sorts of trems over the years, Floyd Rose, Kahler, VIntage and modern Fender (six screw and two pin) even in recent years a Bladerunner so therefore feel able to offer an experienced opinion, if only a personal opinion regarding the overall feel, which is very important to me and is why I don't like locking Trem systems (even though they offer the best tuning stability) but as for the feel and sustain factor, feel convinced that 'IF' you play Stratocasters then the six screw system is by far the best even though it is by far the most problematical where tuning stability is concerned. Locking Terms spoil the feel of an old Strat whereas the modern two post trems just don't sound right if you are a fussy old bloke as I am. This is the best 6 screw type I have ever used, it's of top quality, sounds and feels great etc and is MUCH better than the cheap things chucked onto Fenders. Well worth the money, is easy to fit - ignore the 4 star review as I can't give it the 4.8 stars it deserves.