I was just at aspen all of last week. I never left snowmass. Really good conditions. The runs at snowmass are very wide open. Here's what i did:
In the morning take the sheer bliss chair all the way to the top, check the board for which runs are groomed off of the big burn chair. Take max park all the way down to the big burn chair and lap whatever groomed runs are there. Usually, sneakys is always groomed and it is the more mellow out of all those blue runs. Whispering jesse and dallas freeway are also really good. Some really nice wide open carving before you get to the steeper parts at the end.
I stuck to that side of the mountain in the morning as most newbees in the morning would go to the elk side.
Then, delay lunch between 12-130 as everyone takes a break, head over to the elk camp gondola then the elk camp chair and do all the runs off that chair. Bull run, if groomed, is freaking amazing. wide open with sparse trees. I had blast carving in between trees. Plus, they usually have one of the employees at the end of the run taking pictures. (if you feel like paying hundreds for a few pictures)
PM if you want more beta on snowmass. I can't speak much to the other resorts.
Oh and don't waste your time with the cirque lift. You can get equally impressive, if not better views, from the elk camp chair.