I have two, like them both. I wanted 8 MOA, is what I was using with a Slideride, and was very happy. Had to go with the 10 MOA, 8 was not available, but am very pleased with the 10. I was a little unhappy with the 10 at first, the dot will distort at high brightness indoors, but outdoors it is very crisp. Also find that he sunlight does not wash out the dot like the Slideride. So far, they have been very good on battery life, both new the beginning of this year, and still a strong dot.