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Your review ways: "Not so friendly It’s only compatible with iTunes so you have no choice about where you can buy your music online."
Sorry but this is rubbish!
Firstly it is possible to load music on with other applications.
Secondly you can buy your music from anywhere and iTunes (or other app) will put them on the iPod. I have on my iPod mp3s I've ripped from my own CDs and that I've bought from a wide variety of retailers such as Amazon/Play etc. There is however not one track bought from the iTunes store on there.