Advice on Zune players for kids

Our members are discussing gift options for teens and ‘tweens’.
Given the current holiday sale prices on Zune players, is it worthwhile to go with a high capacity player? Or does the small size of a flash Zune trump that?
How important are the capacity differences between a Zune 4, 8, and 16?
And, how does the new Zune Pass model affect your choice of player to give?
Each of my three daughters has a Zune player, so I asked them to weigh in. See this discussion in our forums for gift-giving advice.

