I decided to get the 4500. It has better components than the Wahoo, and was $20 cheaper due to it being on sale. I also like the feel of the Judy for better than the Axel fork. The Axel felt way to soft, and the lockout seemed to be pretty useless. When I engaged it, I still had about an inch of travel before it bottomed out/locked out. Took the 4500 for a ride today and was very happy with it.