Baker is the sh!t. If I have to explain, then you obviously haven't been there.
When there's good snow, Crystal has great terrain. It's also the largest in WA. You can pick your own lines, lots of goodness in the trees, even more if you're willing to hike the King or head out into the backcountry. The same pretty much goes for Alpental, albeit on a smaller scale.
Parks at Summit Central at Snoqualmie & Stevens are good enough for me. I can never stand to do more than a couple hours in there at a time. Wouldn't waste my time at all if there's any kind of new snow. I don't fuck with rails, anyways.
Mission Ridge is also a pretty cool little mountain. Only a few lifts, but good atmosphere, a few long runs, and good terrain. For the same distance, I'll go to Baker any day. However, if I'm doing a weekend in Wenatchee or Leavenworth, I'd def go again.
16 NS West . 15 NS Snowtrooper Brother in Arms Edition . 13 Salomon Pow Snake
15 Now Drive . 14 Burton Genesis
14 Flow Hylite