Take the elevator, you're most likely to miss the train going down the longest escalators on the planet! The stairs are Great for a toosh workout upwards though!
When you take the elevator, go out the back way to avoid all the people trying to come in the front. Easier to run for that train that's about to leave.
Always bring a jacket to this light rail station during the winter. There are no seats and no wind breakers so you will freeze your ass off. This station sucks.