Pros:
If you are playing Aspen you are experiencing quite a view as you are on top of a mountain. The gondola ride to the top is long, and full of wonder. The ride down is long and relaxing after a grueling round. There are a few signature holes, one next to a cliff, and one that has a monster drop and is over 1500 feet long. You get massive exercise playing this course. Your friends will love the pictures you get. There are maps available at the top and there are signs throughout the course.
Cons:
When I played there were kids running all over the place unaware of the course. What goes down must come back up, on foot. Hiking up a ski slope beats you up a little. If you think walking up a steep but wide open jeep trail would make a good back nine than this is the place for you. Make sure you bring water, maybe even a lunch and an Asprin for the elevation. The gondola fee of $20+ is a little steep considering that there is really nothing up there in the summer time. Its even expensive to park your car in Aspen. The astonishing scenery does not equate to a disc golf round with a high fun factor. I did loose a disc on the "kiss it goodbye" hole and I just climbed down like 70 feet and retrieved it. The tee areas are dirt, uneven and sometimes rocky, most of the fairways are wide open in the middle of the slopes. I know the whole idea seems hard to resist, and I know you're going anyways, but you will feel suckered, and you can't say I didn't warn you.
Other Thoughts:
Aspen should scrap the course on top of the mountain thing and be more like Steamboat who put their course on the base of a side mountain. Both Aspen and Steamboat are a lot of work, but the payoff in Aspen just didn't feel worth it. Aspen might also be improved by getting into the woods a little bit more. I get the feeling that people want to remember a breath taking trip to the top of a mountain, which is ok because that is what you will get here. The vistas fall short of making up for a disc golf round that has a relatively low fun-factor. The local area disc golfers I met the day before tried to draw me a map to the top, and didn't have much praise for the course. I should have taken that as a hint.
If you need to stock up on discs before heading up, there is some selection at the Miners Building (a hardware store) on Main St. You might even be able to get the 411 about driving up the road instead of having to take the gondola.