Cool site. Some sick pics.
So, I guess I've skied the toughest there is at Gore, Hunter, Whiteface, Mad River, Stowe, A Basin and Breckenridge, as I've skied each of the listed runs for those resorts. I'd agree that the listed runs for the East Coast resorts are some of the toughest from each mountain, but I don't know that I'd call them all extreme.