For me and only for me, I can discern no utility of an optic sight on a handgun. I'm fine with iron sights.
On a handgun I might have to use to save my life, I want nothing attached to it. I want nothing to distract my attention. Since 90+% of all gunfights are at 10' and less, I need not sights. It would be all instinctive point shooting while getting out of a threat's sight picture.
People get too nutted up over self-defense accuracy. Any hit on a bad guy is a good hit. Some hits are better than others, but any hit is a good hit. Far surpassing good guy accuracy is bad guy accuracy. A wise good guy knows of the critical importance of not taking rounds. Hence, the ultimate importance of getting the heck out of a bad guy's sight picture. If Rule One of gun fighting, which is avoid, avoid, and keep avoiding, isn't an option, then Rule Two becomes dominant: DON'T GET SHOT.
For wilderness survival, which is the only scenario that I could think of shooting at distance, I'm darn close to 100% positive I could hit a deer with my Springfield Armory TRP .45 ACP at 70 yards, assuming I could not close distance. When bg game hunting with a rifle, I'd rather shoot at big game at a 100 yards than farther. Closing distance might determine whether a hunter affixes his tag to antlers.
My Sig "P" series handguns (metal, hammer-fired) are extremely accurate. But I'd have to go with my TRP as my most accurate handgun. I know it's more accurate than a Series 70 Gold Cup that I shot decades ago.
Decades ago, I shot a friend's S&W Model 27-2 Even with magnum loads, that was one extremely accurate handgun. Had I had brains back then, I would have bought one. That gun would perforate soda cans at 25 yards routinely with magnum loads. At least two gunsmiths have told me that the Model 27-2 was the best revolver ever made. But I'm a 1911-A1 shooter through-and-through.
silver-bullet, my advice is to know the primary purpose of a handgun before buying it and before affixing an optic to it.
I don't own any striker-fired handgun. However, from what I've been told by G-17 owners and have read, it's an excellent handgun. It's probably the most widely used law enforcement handgun in the Western world.
I've fired many brands of 1911-A1s, from extremely expensive to far less expensive. The most accurate factory produced 1911-A1 I've shot is my TRP. Springfield Armory got it right with its TRP.
https://www.youtube.com/watch?v=03oXMTKRfnU