I'm a fan of the Crimson Trace on the Smith J Frame.
I've had the Crimson Trace Laser Grip on a J Frame for a while.
Also have lasers or laser/lights on another S&W, Kimber, FN 5.7, Kel Tec PLR .223 pistols and 12ga pistol grip shotguns.
I won't be without a (quality) laser on my defense guns, if available.
In their element the laser is king.
But like any form of shooting it takes knowledge and practice to be proficient.
I try to practice with the laser at least once or twice a week.
Some recent laser targets.
15 yards. Point shooting. Top target left hand. Bottom target right hand. (I'm right handed)
25 yards, J Frame, standing, two hands, fast fire.
10 yards, left hand, point shooting from the hip.