I have two CC brushes and one of their Buttercombs. My cottony pup HATED being brushed until I got one of these and the first time I used it, she rolled over to have her belly brushed --- that sold me.
That first one was one of the Gold Series and then I got one of the Fusion brushes - in a smaller size. That is really nice too and the smaller size works great for my smaller one or to get into tighter places.
Once I tried to use the old brush on the cottony one and she totally rebelled! I couldn't believe it. A lot of the brushes out there damage the coat and/or scratch the skin.
Just my experience...