Well donno what the reviewer was smoking, but Ipod works on Windows too (The hype would have ended way back if it wasnt compatible). If you are into active lifestyle (like getting your rear off the chair and eyes off the computer), Ipod is your thing. The cheap plastic actually makes it light and easy carry - it is sturdy without being bulky. Yes the hype around it make you expect a real futuristic gizmo, however once you use it for sometime you will see what it is all about. I suggest getting an ishuffle (again a cheap plastic thingy and comes in 512 mb (99 songs) and 1 Gb flavors, does not have a display and costs around $99 for 512 mb and $149 for a gig.
You can charge the battery using your USB port no charger required (And the charge last for more than 18 hours so pretty good).
And again it works on both Windows and Mac.
Go for it, if you are a fitness freak.