Recommendation: This is one awesome guidebook! Incredible detail, awesome descriptions, and an exhaustive look at every single ride in the area. If you are going to be mountain biking in the Crested Butte, Gunnison, or Salida area, you'd better buy this book!
Pros: Beautiful full color photos of popular trails, detailed topographic maps, complete coverage of the CB/Gunnison/Salida area trails.
Cons: Too many trails to choose from! Honestly though, it would be nice to know which trails are "must rides" and which ones are for the locals.
Recommendation: One of the most detailed mountain bike guides you will find. While the Falcon Guides usually send you off with a simple drawn map, Holly's Ride Guides provide you with trail maps overlaid on a real topo map so you can get a feel for the terrain. Awe inspiring color photos make you want to get out and ride!