Having fished some private water in Colorado, my biggest beef with it is that some of the private water owners feel obligated to stock the heck out of the water and pellet-feed the fish. That takes some of the challenge out of it. Beware of guides who deny that the fish are pellet fed but then want you to fish a brown hare’s ear that looks suspiciously like a pellet all day. 🙂
If you can get on private water that’s not “pellet pig” water, it can be a great experience.
However, I’d note that there is some spectacular public water in Colorado too.
bd