Well, CNET has posted "Five reasons not to buy an iPod". Of course, realistically for most people, there are only 2 reasons in there that really matter (reasons 1 and 3); for the active, reason 2 as well.
In case you were thinking, no I wasn't thinking of getting an iPod. My main beef with the iPod is its price. And 6 hours of battery life just doesn't cut it. I'd much rather get one of these or perhaps one of these. Maybe in 7 months time.