Here is the thing with a Glock. The trigger is way different. I never owned on until about 6 mos. ago.
It will take you at least a thousand rounds to really get comfortable with it. I have my 19 set up with a NY1 trigger and a 3.5# connector. That gives it about a 5ib. trigger pull that is crisp and an ultra fast reset.
I own a lot of pistols. I mean a lot. I have owned and shot the 1911’s for years. The are great pistols. They are accurate because the design is great and the triggers are consistent on every shot. However everytime I shoot IDPA the guns that always jam are the 1911’s. Never the Glocks or XD’s. I would never carry the 1911. Great gun but not for me.
.45 vs. 9mm is an endless debate. Handgun stopping power is pretty much a myth. Both will do the job. When I carry a .45 it is a SW4506. Big gun, very accurate but it weighs in at 40oz. +. I can shoot it fast and it holds 8 in the mag. My Glock 19 holds 15 and I can shoot it real fast. Faster then any 45 I own. It’s also quick to get the first shot off and my trigger is consistent for every shot. I like the 9mm for a lot of reasons but it is a personal preference because I prefer the rapid fire and I am accurate with it.
I was also taught to shoot center of mass with a pistol. The last class I took on combat pistol techniques emphasized shot placement to the upper chest instead. A section of the class was actually taught by a doctor with gunshot experience in a major city. Said 85% of those shot with a pistol survive, and the perps know that. He also stated that one shot in the upper chest is highly likely to be terminal and he has never saved anyone with two in the upper chest.
Enough for now. Love talking about guns and shooting though.