There has been debate about SxS and O/U for years. It comes down to preference and balance. The main argument I always heard was that the SxS pulls left and right whereas the OU just pushes you back.. I've seen people use both guns with equal success in hunting situations. However you will not find many competitors shooting the clay games with a SxS. Maybe there is some creedence to the discussion. If you can put shot on target, use whatever you like.