Started with the factory bead. Then added a set of rifle type sights. Then progressed to a low power shotgun scope. And finally settled with the Burris FF III. Don't know how I could go back to anything else at this point.
Easy to change the battery with the FF III. Low profile design. Several different power settings...from auto to a few different brightness settings to dial in what you like.
Only regret is not using the Sumtoy mount. I went with a different mount. If the sight ever has to come off for whatever reason, a Sumtoy mount will be added.