Utah is cheaper . . . my friends and I planned a trip out west this winter. We went with a deal in Utah that was by far cheaper than anywhere else out west, Colorado, California or Washington and it was the best trip I have had.
Also Alta, Snowbird, Solitude and Brighton have a superpass deal, where you get a pass that gets you a ticket at any of those resorts. It works out to be a lot cheaper than buying individual tickets and we got our fifth day of skiing for free by booking before a certain date. Yeah I say Utah is cheaper, plus we got dumped on while we were there