The old polymer Glock sights are the worst because they break or slide off easily. the newer one with the post front screw is better. Other than that, most iron sights available are good to go. I prefer fiber optic front and rear black sights. Although, I would have to say I like my rmr glock best atm.
I have Glock night sights on my G43 and I like them pretty well, I haven’t experienced enough to say they are the best though. I also have Ameriglo CAP sights on my G19 and they seem fine, but I haven’t shot with them much yet. I have had trijicon HDs on a Shield and XD in the past and wasn’t a big fan. They were big, bulky and had a sharp edge. Trijicon does have excellent customer service though.