Depends on your application. I have the surefire M1. It has the most operational flexibility. It is a small tactical light with lanyard that can be used with PVS-7, PVS-14, and IR illuminators mounted on your handgun. For long range, I have used an IR filter on a Hotwire Maglite. That configuration pretty much overwhelms even Gen 3 night vision. Buying an IR filter for a Mag gives you the most options.