1st Choice=
Speer Gold Dots! There are a few others too:
Winchester Ranger Bonded (the bonded is just like Speer Gold Dots) and
Hornady TAP'S. Those three work extremely well in my
GLOCK's.
I have wanted to try some Federal varieties too because of how accurate the Speer Gold Dots (also an ATK company) are, I imagine that Federal would be too. I have heard lots of bad and some good about Federal's ballistic tests. But, with ammo, everyone has an opinion/preference for what seems to work well for them.