RE: Glock enhancements
I don't know about you, but the Glock factory sights suck. I have not tried the factory night sights, but I know a few people who use them and like them.
Personally, I prefer Hi-Viz sights (light pipe, no Tritium) for daylight and twilight shooting. Tru-Glo sights (light pipe with Tritium) work well for the same situations and if you find yourself drawing your weapon in the dark. I don't know about Trijicon or any other Tritium sights other than the Tru-Glo's, so I can't say yeah or ney about them.
Also, I'm not a fan of LASER sights and the thought of attaching a flashlight to my weapon isn't appealing to me, either. Just my $.02.