Interesting. I put on Hypers (700x35) at the end of July, just rolled over 1000 miles today on the way into work. I've had 5 flats with them. The first one, a nail, was understandable. All the rest were items I would have thought the Hypers should have handled.

I really want to love the tires, I really do. They have a great ride and handle well. But I can't deal with the flats, not on my commuter. The hardcase Bontragers I had before never got a flat riding the very same roads.

So, as much as I want to like them, when I got my 5th flat last week I decided enough is enough. I have on order Schwalbe Marathon Plus. I'll give up the ride for more flat protection.

Apparently, YMMV.