That means that the iPod is 25% shorter, 33% narrower, and 43% shallower. The iPod is 125.44cc in volume. The Riot is 438.75cc in volume. That's 3.5 times bigger. (That can't be right. I've never seen one, but the Riot can't be that big. Someone correct my math.)

No, I've got a Riot and an Ipod on the desk in front of me, and 3.5x sounds about right. This is not because the Riot is huge (it's much smaller than the Creative Labs thing) but because the Ipod is tiny. I don't actually know what the battery life of a Riot is, but for the Ipod I can say that Apple's estimate of 10 hours is very conservative; I get more like 15.

Peter