Keystone, no doubt. Breck's jumps are a little better, and the pipe is much better, otherwize go with Keystone. Keystone's got a few jumps lines ranging in size, rails ranging in size, a shorter lift thats park only, and usually shorter lift lines. Breck has a much better pipe, the jumps are a little smoother and its better taken care of, but its a pro-style park. Intermediate will have a tough time on a lot of the rails in the main park (especially trying stuff) as well as jumps. Breck also tends to have really long lines. Both parks are really solid, spend your first two days, one at each resort, and figure out which one you like better.