I agree. I have three Glocks, as well as most of my other pistols, and all have either factory NS's or Meprolights. I actually prefer the Mepro's, and will replace the others with them as they go.I would just send the slide to Glock and have all steel tritium sights installed.
Al lot will depend on what your used to too. I've been shooting three dots since before they were lit, and I actually see the dots before I see a standard sight picture. The three dot night sights just give me a 24/7 sighting system I'm used to.
I agree with azredhawk in his assessment of using the sights at night with a light, and it works exactly as he describes. Night sights work in all levels of light and work where you have light but cant always see your sights or make out a sight picture, like when you have a dark target with a bright or lighter background. The finding your gun in the dark thing is pretty handy too.
I would let the peep sights go until you have a chance to actually shoot a gun with them installed for awhile. They dont work like the rifle versions do, where the rear sight is close to the eye and you pay it no heed and focus on the front sight. With the pistol equipped peeps, as well as the forward mounted rifle type peeps, you still have to mentally and physically align the front and rear sights, and if anything, it actually takes longer and more thought than the standard sights your accustomed to. I installed a set when they first showed up and tried to make them work, but I found them to be more trouble than they are worth. The only advantage I can see with the "hex" version is, the breaks in the circle give you a mid point reference you can roughly align your front sight to to know you have some sort of alignment, something blatantly lacking in the "round" versions.