Tijicon HD sights, Xs Big Dot sights, Meprolight, there are lots of choices out there, just comes down to what you like and will work for you and is easy to pick up with your eyes.. I have Xs big dots on my EDC G30SF, all my other glocks have stock sights, I just put a dot of high viz neon yellow paint on my stock sights to see them better over the white..
If Trijicon HD's float your boat, check out Ameriglo i-dot Pros. Their proglo front sight is exactly the same, and they use Trijicon inserts. You can get custom combinations (different rear sight) if you wish and they will be cheaper than the HDs.