I had the older version of this book and absolutely loved it. I've planned many weekend trips and vacations based on the hikes in this book. I've never disagreed with the authur about a hike being one of the top 100 in Colorado.
The new version has elevation profiles which are very nice. However, I don't care for the new maps. The old book had maps which were very easy to see. The new edition has topo maps which I think are too crowded and busy to be able to make anything out. I can't tell if there are streams next to the trails, which is very important to me as I hike with a dog and it's usually the first thing I look at.
There are several new hikes: Bear Peak (Boulder), Lake Isabel (W. of Denver), Mount Falcon (Denver), Devil Head (Sedalia). Red Rock Canyon (Colo. Sprgs.), North Cheyenne Canyon (Colo. Spgs.), French Pass (Jefferson/Fairplay), Tater Head Loop (Crawford), Mosca Pass (Alamosa), No Name Lake (Antonito), Rabbit Ears Mesa (Grand Junction) and Sarvis Creek (Steamboat).