I had a red dot until I left (or more likely bumped) the thing on and ended up with nothing but the equivalent of an empty papertowel tube. I always carried a spare, but the gobbler did not hear me call time out and charged in while I had the cap off. Killed him anyway at 15 steps (cause its all or nothing at that range) but that was it for me and electronic sights.
She now wears a Nikon Team Realtree 2-7x32. Designed more for a smokepole or slug gun, but it works very well.
Whatever you decide, two sets of rings is a good idea