First of all I grew up shooting pumps but I have shot a fair amount of different types of autos and I have never really cared for autos (for some reason, can't really explain it). I bought my first O/U when I was a jr. in HS and haven't used my pump much since then. I like the O/U b/c of their simplicity escpecially when it comes time to clean them. Watching the members at the shooting range clean their autos (and i've cleaned a few myself) makes me not ever want to own one. If I couldn't have an O/U, I would be shooting a pump....just my personal preference though.