i had never really considered them but ended up with an old tubular wheelset with first gen phil hubs so decided to give them a try. got a pair of veloflex raven 28mm tires from merlin on sale. it's only been a couple months and i haven't had a flat yet (knock on wood) but i'm loving the ride. maybe it's in my head but feels more plush than 28 clinchers. i ride around 75psi mostly on paved and gravel trails.