If I had to pick, it would be the Friday morning AF canyon group ride. It's a ride but it always ends up being a race. A weeks worth of bragging rights among friends is better than any podium. This race includes the KOM, regroup, followed by a crazy fast, twisty descent for the sprint at the guard shack. In short, it has something for everyone. Don't feel like hammering the climb? No problem. You can save your legs and try for the sprint. But if you are feeling good, go for both.
And with the Kneaders at the base of the canyon. For $5 you can enjoy all you can eat french toast and pancakes with a side of trash talk.