I settled on the 16 decades ago. I could only afford one nice gun, so shot a Citori lightning 16 for a lot of years. When I finally got financially secure. I tried the 20 ga. Citori. Hated it. Kill one, cripple one (Quail)... Traded for a berretta 686 20. Same. Years later bought a Ugartechea 28 sxs. I was shocked when I discovered that with 1 oz heavy loads, I loved it! I used to brag that it would outshoot any 20. At some point I realized, that didn't make since. So, I think part of my cave man brain realized the 28 couldn't make the 16 range shots so didn't take them. I now have several 20's and love them, go figure??. I still shoot the 28 and have found that with an oz of shot, I can't tell a lot of difference. Any thoughts??