Aimpoint has a great batery life (which is nice for a go-to gun), and EoTech is super fast on target (but battery life could be better.) If you get the EoTech, mount is integral, and get the version that takes AA batteries, for simplicity and extended life - yours and the optic's.A magnifying scope is a good thing, but it is not as fast on target and it can be a pain to mount - it is gotta float up