the thing that is great about the laser max and the crimson trace is that you don't have to get any new holsters. the devices mentioned don't add any size to the outside dimensions of the pistol.
laser devices are great, i use them for dry fire practice, and equie guns with them for my wife when i am deoyed or otherwise gone so that she will be able to make accuarte shots while holding one of our kids, the phone, from in the bed etc.
i prefer the crimson trace grips they are adjustable and user friendy just put them on a battery in em and go to town.
the laser max's are nice, i like how the laser pulsates, that makes it easy to ick up in any light and allows you to track it easily.
i have used both one several guns, and i prefer the ct grips, as long as they don't add to much size to the grips as i have small hands.
i have never had an issue or a negative coment to make about the ct grips. the only thing with the laser max that i have seen is that in my dad's glock 19 and with his reloads, of the loads weren't able to cycle the slide competely, which was easily fixed, but that is the one and only issue that i have seen with them, but with factory ammo they were good to go.