A few families from Winnetka have moved to Evergreen over the past five years, including some very good friends of ours. Everyone seems to like it a lot. Our close friends (who have three kids now in 5th, 9th and 11th grades) are very happy there - it was a life style move for them and now that their kids are getting older I'm not sure they see the same huge difference in pace that they did when the first moved out of Chicagoland, but overall they have really loved the move. They are super outdoorsy and athletic and it has definitely upped the amount of time they have for that and their son is now a nationally ranked mountain biker and triathelete. They are now talking of moving even further out once the kids launch (e.g., Steamboat or the San Juans).
ETA: I will say that part of their happiness there is that they don't commute to Denver. The mom doesn't work outside the home and the dad works from home the majority of the time and travels as needed. No downtown office to go to daily, which would have changed the equation. It's not super close.