I use the factory STEEL sights on all six of my GLOCKS, and absolutely love them! I think it is the fastest sight picture I've ever seen/used...I work in a gun store, therefore get to handle virtually every handgun on the market, and IN MY OPINION the "dot in the basket" reigns supreme (SIG's "dot the stick" is right there with it!). I shoot a lot of IDPA (3 to 4 matches a month), and this system works extremely well for me. Hardcore target sights they are not, but for the weapons intended purpose they're awesome. As far as night sights are concerned (I'm sure I'll take a beating here!), I think they're rubbish...I'm in the camp that if it's so dark that you need to illuminate your sights, then you're surely going to have to illuminate your target...practice with and carry a tactical light!