I agree with T-Rat, for the $, Trijicon is a top value,
www.trijicon.com .
I like the HD orange/green 3 dot set-up.
I'm not a big fan of fiber optic carry-duty sights. They seem fragile & easy to break in a high stress event.
Trijicon sights are added on to many law enforcement & military firearms.
Clyde