I have had both lasers. With the CT, it only intersects the target at one point. Of course "most" of the time, you will not be shooting at a great distance, so the point would be moot. I also don't like to have to "hold" the button down to make it work, of course this could be to your advantage, depending on the situation.
I like the Lasermax. The "pulse" gets my attention right away.
As for ammo, I asked the local police what they used. Figured if I ever had to actually "use" my firearm, the DA would not be able to accuse me of overkill, if I used the same as the police do.
And, Welcome to The Firearms Forum.
The gene pool needs chlorine