Cluttered, sluggish UI
Cheap, European maps as standard
'the extreme compactness of the device makes it a bit difficult to interact with the touch screen.'
'The Mio C520's media player is basic (though you get equalizer settings and playlist creation) and as we mentioned earlier, the interface is somewhat confusing and bare-bones.'
'The number and letter buttons are quite small and cramped together, and there's no included stylus, so you have to pay close attention as you enter addresses.'