One thing red dots do is force you to be very consistent with presenting the pistol to your line of sight. Getting the hang of it with the red dot has improved my first shot speed with basic sights as well.
I have a laser grip "projected" dot on my little .45 caliber Colt Defender. I like it a great deal. Easy to see the dot without any squinting, etc. It projects the bright red dot and is very easy to find even if it's a good distance away by just following your iron sights.