This one is the professional one, the others don't have the security measures on... Not sure of the full extent of them, but it does have a finger print reader and password / pin number combo... pretty cool, though I've not actually used it.
Not used mine for listening to music yet either, as I have the IPOD. I would say just get one, and forget about the money.
Paul Clarke's weblog - I live in A small town, Kent. Married + father to two, I am a full-stack web developr, and I do js / Node, some ruby, other languages ect ect. I like pubs, running, eating, home-automation and other diy jiggery-pokery, history, genealogy, TV, squirrels, pirates, lego, + time travel.