Welcome to the Newschoolers forums! You may read the forums as a guest, however you must be a registered member to post. Register to become a member today!
Alta has the best backcountry access by far and the canyon closing is awesome in my mind... hop on a bus instead of driving up and you get there before any cars can.
No reason to get more than one cottonwood pass unless you don't feel like driving a little farther. PC + alta/snowbird is the best combination for sure.