Hi Seth - I am a Colorado native and can honestly say that just about ANY part of western Colorado is beautiful. Some of my most memorable Colorado vacations have been in Gunnison (4th of July), Black Canyon, Ouray and Telluride (fesitvals), Colorado Springs (Pikes Peak and Manitou), the Western Slope (lots of fresh and wonderful fruit), Glennwood Springs (hot springs), Aspen (mountain range), Boulder (people watching at the Pearl street mall), and certainly Estes Park. Have a great time, and bring lots of film.
Must see Rocky Mountian Nat Park. You can drive up, and down the other side to Estes Park. Nice cap off to your trip.