I've got CTC grips on several guns. IMHO, they are best-suited to the smaller guns, like J-frames, that are harder to shoot. My CTC-equipped 442 will put 5/5 shots into a pie plate at 25 yards with the CTC's on it, which extends my "kill" range to double what it would be without.
I also have CTC's on my Glock 23. It's the gun that sleeps beside my bed, and the gun I take with me to the movies... I can hit the -0 zone of an IDPA target in the dark at 35 yards with the CTC laser on it. Without it, even with tritium sights, half the distance.
YMMV.
