From my point of view, the thing about lasers to consider is what your intended use is going to be. More power is not necessarily better - particularly with IR lasers used with NVGs. The newest eye safe class 1 IR lasers are 0.7 mW. I have seen first hand with NVGs that they are effective in aiming out to 200- 300 yards easily. This is at or near the limit for target ID with good gen 3+ NVG anyway. In closer, like inside a structure, even 0.7 mW has some bloom to it under goggle, making them less effective not more. This is why the new pistol IR lasers are even lower power - 0.1 mW. No one is trying to shoot a pistol under NVG out at 300 yards.
Good green visible lasers (LDI or other) are visible in daylight in my experience out to 100 yards or so easily. I find use of red dot scopes more effective than the laser at engaging targets at range in the daytime out to the limits of the rifle, shooter, and ammunition. At night, that equation changes significantly as NVG use on the helmet is much more flexible and safe than NVG mounted to the rifle. This is where the IR laser really shines to me.
Military lasers are used for more than just aiming that particular rifle system. They are often target designation for something bigger. That use doesn't really have any civilian application, so for me - more power - is not something I am looking for in a laser.