+2 - I used to ride Performance tube exclusively because of cost. I ended up with a set of these Michelins on my Giant TCR as stock tubes. I have been through over 4500 miles, a change of tires, new chain, etc...but no flats...(I know I am doomed now, but WTF)

I too like how the valves are non-threaded, but now my pumps have worn to the point that they blow off of the valve stem when pumping to pressure. Annoying for sure, but for the life and durability...call me a Michelin Shill.....