For $1600 itï¿½s no wonder shops canï¿½t keep these in stock. Noticeable aero benefits, great weight, fast acceleration, holds momentum. Incredible hub design for this price point, much better than the Zipp 3 pawl hubs on their 303s wheels, which I also considered. It is hard getting new tubeless tires on but with patience and technique itï¿½s doable. They also hold pressure really well. I have historically been a Zipp guy, but I am so happy with these wheels. Made in the USA too!