I have the Hypers in 700x32. They seem really nice to me; they don't feel at all slow or unwieldy. They "feel" faster than the 700x32 (though really x28) Avocets they replaced, and the Hypers are much more comfortable as well.

I only have a couple hundred miles on them, but so far I really like them - no flats yet. I'll definitely buy them again if they don't turn out to be flat-prone.

My Buzz came with the Randonneur Cross tires that CliftonGK1 mentions... those tires are dogs.