A couple years ago I was using the standard connector in all but one Glock and in the one exception it was a Gen 3 G17 and a minus that just came out SWEET for games but I would never carry. Each Glock is sort of unique and this one with a Scherer minus was much lighter than the guns I have today with minus connectors. With that gun, I'd trip a shot way early before the sights were settled on target at least once per training session and at least once per match.
Based on that I dissed the minus in discussion on M4C and someone replied that my problem was doing so much shooting with my carry 5.5s and then sometimes picking up the light trigger gun and if I'd standardize on the minus I would resolve this.
I flipped that particular 17 to get the Gen 4 G17 more than a year ago (a real peach of a Gen 4 too) and took that advice and pretty much standardized on the minus. None of my current battery ends up nearly so light with a minus connector. Almost all my shooting is now minus across the line up and what that reply post told me has proven out. I think I've got about 3-4K rounds fired this year and I've only fired early on press out twice going for hyper speed and both of those rounds impacted in the "throat/clavicle" area vs the paper plate . . . and a third time going for hyper speed on the 3x5 in a FAST drill and the shot parted the hair of the IPSC cardboard but missed the card.
Just food for thought.
Oh, and btw, I've seen DocGKR post elsewhere that he and his "they" use the minus and have found actual pull weights close to 5lbs give or take a skosh and that's my sense of my guns also. Gen 4's a tad heavier, Gen 3's a tad lighter but not that far different.