I have a Nikon Prostaff, which i do not think was made for golfers but rather deer hunters. Very accurate IF you can keep it steady. And frankly it takes time to use. Too big to really carry on belt, must detach from bag, focus in on object large enough to reflect the light beam and need to avoid beaming near people as laser beam can damage eyes of distant person if beamed on him. Most flagsticks too thin to reflect beam, some (few ) have reflectors built in. On very busy courses, the time factors means one more headache as the marshals don't care why you are late.
I'm considering rigging up my ball fishing pole to support the laser. Kind of a 'uni-pod' stabilizer.