Hmmmm...regular Guiness goes down with all the authority of hose-water, IMO. The Extra Stout is where it's at. More alcohol, better mouth-feel (God, that's one for theodie!! Doh!) and it's carbonated instead of nitrogenated...Arthur Guiness probably didn't even know what nitrogen was, so even if that's what gets served in Ireland, the Extra is still better, IMO.