Holy nerding out batman...

I like that people dive into certain aspects of WML's tech, application and tactics.

For an HD, drawer/desk gun, you need it to do two things. Turn light on and turn light off at will. That's it. 99.99% of the lights do that.

If your budget allows it, get one of the newer WML's which I recommended.

If you are on a tight budget get a TLR-1s, I carried one on duty for years, it is good to go for duty work and will be perfectly fine for HD work and dry training.

This is more a training thing than a hardware thing. Most WML's on the market do exactly the same thing with very slight differences. Unless you are using it for DUTY work or OVERT action, please keep your eye on the goal.