I have 4 Burris Fast Fires. They work exceptionally well. My eyes are not good enough for open sights and I hate using the bead with tight loads. The dot just doesn't get any easier and it's very fast.

Mounted a FF2 on Dad's new turkey gun this year. It was his first time using a reflex on a shotgun, he's pretty die hard about running a bead. We went to TX, which was the maiden voyage for this rig for him and after the first couple shots he was saying "man, I don't know if I like this dot thing.." then by the 3rd bird he was saying "Man, this dot thing is the real deal..." I hope the zero doesn't shift or the battery die lol