I have tried several of them, after many years of use and trying different things
the one thing that made the biggest improvement in my game was learning how to tape the thumb-hole and relax the hand, grip pressure is important in the game today.
it sounds simple, but until someone that knows what they are doing checks your grip, pitches, etc and taught me exactly where to put the tape, did my release and grip pressure get any better.
this was for ME though, your results may vary