For what it's worth:
I don't have much experience with or without to compare, but when I took my conceal carry class, they were against lasers. (never brought up flashlights)
Reason being is, if anyone is confronted by a home intruder, if you think you're going to feel calm and cool like dirty harry, think again. Even the most seasoned police when drawing their gun because of the possibility of having to shoot someone, the adrenaline is running like mad, your heart rate raises tremendously, and you will be nervous beyond what you can imagine. Now try finding that dot. It's going to be dancing around all over the place. They emphasized you should not be looking for a dot, you should be training to have muscle memory to draw, point, and shoot. Ever ride in the car in the passenger seat, and have a close call? You instinctively hit the break, even though it's not there. That's how you should get with drawing a pistol.
My 2 cents.