Pros: steep, full of interesting features
Cons: low elevation
Alpental is really good for a small area: most of it is steep and it's 45 minutes from Seattle. What is outstanding is the backcountry. Modest hiking accesses steep terrain with bowls, chutes, cliff bands, jumps and trees. The low elevation means that the snow isn't typically as good as, say, Crystal Mountain's, but the backcountry terrain is even more fun that Crystal's.
Check it out: http://www.alpental.com/snow-h.htm