Very fast. I set a few PRs without meaning to on my first ride to just get a feel for the wheels. Great weight. With a Dura Ace cassette, they weight maybe even a few grams less than my Zipp 303 Firecrests with Ultegra casette. Handling and stability is also great, even in winds. I'd go so far as to say that these could be every ride wheels, with the minor exception of significant descents where you will face strong crosswinds. Even then, some with more skill (or courage) than me might even be fine on those descents.
Love these wheels. Woosh woosh. Perfect setup for tubeless.
