I bought and had installed a pair of Schwalbe Marathon Plus tires about a month ago, I was getting tired of fixing flats dang near every time I went riding. The flats were usually caused by pieces of wire from radial tires, unfortunately in East Texas the highway department is not especially great in picking up tire scraps. Anyway, I haven't had a flat since and I have put a few hundred miles on them since they were purchased. They are a little slower than the stock tires which came with my 2012 Trek 520, but otherwise I couldn't be more pleased. I figure when touring, I'm not that overly concerned about speed.