For me personally, I stick with the stock triggers. My main Glock 19 has a pretty solid trigger from being fired so much, and I trust it.
I’ve seen a lot of aftermarket triggers fail.
This.
The most reliable handguns I see in my courses are stock Glocks of any caliber or generation, with factory mags.
The most unreliable handguns I see in my courses are Glocks that someone has f’ed with. I see 9mm Glocks with red triggers that have multiple issues in each and every magazine.