Hey, I was thinking about diving into this Zune Pass thing...I would use the trial but I used it up already on my Zune HD. but the question i had was...how is the battery life while using the Smart DJ feature? is it like streaming, so on a 3g connection you'd have 6 hours? or is there some better battery management they do to use it? does it stream when playing songs in your collection, or only when playing from the marketplace? is it, essentially, Slacker with a download feature(as far as battery life)? thanks if anybody can chime in, I have an Arrive but I'd assume all experiences would be the same.