IMO there's two ways of looking at this:
1) Go with the standard
Get yourself a Gen 5 standard Glock 19 off the showroom floor. People hate when I say this,
but if that gun doesn't work for you...
2) Try and find perfect
Read through this thread and others, go to the gun shops and gun shows and try to put your hands on every version, agonize over MOS or not, FDE or not, which factory sight options to choose...
Look, I've done, and still do, both. In my head I *know* that option 1 is correct (not just with guns but with just about everything in life), yet I get sucked into the rabbit hole of #2 more often than I'd care to admit. I try to remind myself to just
go shoot the gun, but it doesn't always work.
I will say that typically I go down the rabbit hole, and then eventually wind up with #1. Sometimes before I wasted a bunch of time/money, others before I make a snowflake purchase. Just as examples,
here's one where I did it "right" IMO.
Here's another recent example where I'm doing it right.
Here's one where I'm spiraling down the rabbit hole.
Here's another one where I, and a bunch of other folks, continue to circle the drain.
The point is, sometimes it's the chase that's the fun. I personally take great pleasure and pride in trying to find "perfect" and then feeling good about the purchase I made. What I also often find is that the route to option 1 is a true need/use, while option 2 is generally based in fantasy land to begin with.