I never liked the LaserMax. I've found them to be more difficult to use, and I'm not a fan of the pulsating beam even if it does give you longer battery life. I always thought that the Crimson Trace grips would be kinda lame, but after seeing/using them I was sold. Here's a link to a picture of my Nighthawk GRP Recon with the Crimson Trace grips and the Surefire X200 weaponlight. The laser is activated by a pressure switch under the trigger guard, where your middle finger naturally rests while holding the pistol. VERY easy to use, and a nice strong and bright dot.
Nighthawk GRP Recon (Crimson Trace Grips and Surefire X200 Weaponlight)Edit: Just as a further information for your perusal, this info can be readily found on the respective companies sites and/or factsheets elsewhere-
Crimson Trace lasergrips have a 633 nm 5 mW max power, while LaserMax is a 635nm 3mW max power. Both are Class IIIa devices and direct eye exposure is dangerous, and the wavelength difference isn't a real issue (however the output mW is of note). The Crimson Trace is just plain visually brighter.
Crimson Trace can be seen in bright daylight up to 45 feet (15 yards), while the LaserMax has an effective range of only 10-12 feet (3.3 - 4 yards) in daylight. In general, though, these types of lasers do not work as well in bright sunlight. Just noting a the effect the difference in brightness has.
Crimson Trace are factory set for POI at 50 feet (16.6 yards), and are user adjustable for windage and elevation, while LaserMax are set for POI at 60 feet (20 yards), and are NOT adjustable, with the exception of the 1911 and shotgun styles.
However, the pulsating beam of the LaserMax is a bit more "Attractive" to the eye, and the internal design doesn't change the exterior dimensions of the gun at all.
I don't think you can go wrong with either one, really, but I prefer the CTC.