I had a Glock 19 gen4 and i tried both and liked the dot connecter better. I like the minus connecter in my Glock 34 gen3 which is my current police duty gun. Regarding my Glock 41 45 auto, the dot connecter and minus connecter feel similar. I wish i had a trigger gauge to measure them. I may reserve the minus factory connecters for gen3 and gen4 45 auto / 10 mm Glocks.
If you're going to run a light, the 34 is often better at keeping the lens cleaner.
Thanks. Those answers make sense to me. I take it no one has had problems with debris and the like entering the slide and causing a jam?
Some info in this thread.
https://pistol-forum.com/archive/index.php/t-12375.html