Just ordered a Holosun 507c. I was considering the green dot and the one with all the different reticles but decided to just go with the plain Jane 2 moa red dot. Seems like if I keep things simple I am more successful. Have a buddy that loves his green dot and another that plans on getting one. Just like anything it is personal taste. What sold me on the Holosun is the solar ability and the shake awake feature. It is the in the same price area as most others mentioned here.