I like two myself. Lately I've been a big fan of the Ameriglo I-Dot (reg or Pro). They are basically Heinie Straight 8's except they cost about $60 from CheaperThanDirt. They are a 2-dot system and they're awesome...and very affordable.
My other favorite is the Ameriglo Operators. Green/green of course but they're great for more traditional 3-dot system, but actually gives you a good clear sight picture, which is my chief complaint against Glock brand (Meprolight) night sights.
I don't care for Glock night sights simply because they're too crowded, not the best sight picture. The XS big dot system seems popular but gives the shooter an odd sight picture that doesn't seem to me to be the most precise. Ameriglo is the way to go IMHO. The
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Last edited by SDGlock23; 09-23-2012 at 08:59..