Further study is needed...

 AmeriGlo CAP sights...

...or the regular wide surrounds like on the I-Dots and Trijicon HDs?

I've been using the I-Dots for years, but tried the yellow/green CAP on the Glock 37 and shot it so well that I replaced the TFOs on the Robar 17 with CAPs as well.

A bunch of shooting with both setups is called for...
.