Maybe I don't understand what some of you are refering to about locking tuners. I have PW locking tuners, the only thing I see that they do is clamp the string, the tuner itself does not lock, tremelo use would not be any better with these tuners over anything else.
I do likehow fast it is to change strings
Maybe some of you dont know how to properly wrap a string on a normal tuner, Check this out
If this isn't how your winding your strings, it should be
Also, I can retune to any key I like, the locking tuners don't stop me from doing that. But why would you, your guitar should be setup for one guage of string and one pitch anyway. That's why we have multiple guitars