I recommend Marathon Plus for people who absolutely don't want a puncture and don't want the hassle of fixing one. These people include users of IHG/hub brake utility bikes, commuters and tourists with no mechanical skill, folding bike commuters, commuters who ride in suits.
My own choice of tyre is plain Marathon. I can fix a puncture if I have to but they are quite a rare event.
Marathon is a good general purpose tyre but there are faster options if you prefer to ride century style endurance events.