I've been rolling on Gatorskins for a year now and only 2 punctures, 1 caused by me being lazy and not keeping pressure up, and the other through perished rimtape.
My brother recently had a spate of punctures on his (my old) bike, replaced the tyres after the 6th in a month, problem went away.
I endorse Gatorskins, they're a ballache to get on and off the rim but then you hardly ever have to. Never tried Marathons but have heard good from both the forum and colleagues/friends.
I seriously recommend checking your rimtape if you haven't already
I've been rolling on Gatorskins for a year now and only 2 punctures, 1 caused by me being lazy and not keeping pressure up, and the other through perished rimtape.
My brother recently had a spate of punctures on his (my old) bike, replaced the tyres after the 6th in a month, problem went away.
I endorse Gatorskins, they're a ballache to get on and off the rim but then you hardly ever have to. Never tried Marathons but have heard good from both the forum and colleagues/friends.
I seriously recommend checking your rimtape if you haven't already