LaserMax...manual on / off red laser, mid-quality. I have one and like it.
Viridian...Green or red but green is better. Can be turned on/off manually, but better to use with ECR technology.
CT (Crimson Trace)...usually has a handle pressure on / off switch.
A few others...
Lasers are like ammo or holsters, everyone has their own favorites. It's best to do a little research and read reviews, but all get the job done. It just depends on how you want it to turn on or off. And, like I said, green is usually better than red, it shows better in the day time.
Good luck.
