Marathons are a lot of rubber and are noticeably heavier than anything else I have ever used. Where I live the winter grit that is put on the roads by the city and county slice right through the Marathons, so I don't use them during the wet half of the year. Armadillos ride like a squared off rubber-covered chunk of epoxy-covered concrete. Did I mention their ride is lousy? Cornering can be a bit of an adventure on Armadillos. However, they don't flat nearly as easily in the conditions I ride in, so I use one on my front tire during the wet season.