For what it's worth. I have a 16 gig 8.9" Fire HD. I've downloaded at one time all 24 episodes of a series of "24" about 18hrs total.. Was curious if 16 gig would hold them. Used the lowest setting "good" but picture quality if fine. I have no other apps on unit except what came with unit. Hoping this might help someone trying to decide how many gigs to buy etc..