Holographic sights work well, just have to be aware of parallax. The good ones have very little, but the budget halo scopes have a bunch. I have a sightmark ultra that's really good. and very slight parallax beyond 25 yards. I just couldn't justify $450 and up for an aimpoint or eotech for a scatter gun, but sightmark is around $125Thanks, saddle mount ordered. red dot or holosight. What do you see as pros and cons?