Well, our Schwalbe MARATHON MONDIAL HS 428 tires arrived and I installed them. They were easy enough to install. They look good (with a white reflective band). We have taken 2 rides so far on the new tires. The ride over pothole filled roads feels softer. The grip on smooth pavement feels good. They roll as fast or faster than our previous tires. They are a bit heavier than our previous tires. But, the added flat protection is well worth a bit of added weight for us. These tires seem substantial. We really like them so far.