She mainly wants it to track her running. She's been doing a ton of research, and while she liked some of the features of the Up (like that really cool alarm feature), there were some other aspects to it that she didn't like.

I think it appeals to her that the Fuelband, even though it needs to be charged more often - is easier to charge. It's just USB. The Up and the Flex are both more cumbersome, and neither gives good feedback on the device its self, at least not anything like the Fuelband does.

Personally, I've always been a Fitbit fan, but I'd probably stick with the clip-on style for myself.

I do like that alarm clock feature of the Up, though...