i have an optixME (4 pin)and i love it. I love how light weight it is, and also how tough the entire sight is. I think that the floating smart pin is a plus as well. I personally haven't had problems with pins moving on me. One dislike i have, wich is minor, is the blue level on the bottom...don't like/use it. Gota like the realtree finish as well. But, we all have our preferances.