I have handled a G-series CT and shot with it. I do not own one however, and have only fired a few rounds with it.
The one I shot, on a G19, was quite stable and very accurate. I love CT's fast and easy on/off, which is the best thing about them. I didn't much care for the way it made the grip fit
my hands, but that's a very personal thing -- and truthfully, it wasn't that much of a change. To my way of thinking, there's not much point in getting a laser that has to be twiddled on & off; it just slows you down too much, and it's too difficult to have good light discipline. CT is head and shoulders above the competition in that department.
I'm not personally a fan of LaserMax lights. The on/off is too dang slow and too fumbly, and the flickering light which is allegedly easier to spot is just about impossible for me to find most of the time. Plus, personal thing, I just don't
like replacing functional factory parts with non-factory ones.
If you like the basic pressure-switch interface and are willing to spend some money, you might also consider contacting the
Law-17 laser people. This built-in feature is very similar to what CT was doing with Glocks a few years ago. I can testify to the quality of the installation because my most frequent shooting buddy got a Law-17 mod for his 10mm about 6 years ago now, and we've both been thrilled with the quality and durability of the product.
pax