I used the bar mount, where you clamp it to the handlebars.
I put it centrally on the bars, and it looked okay, had to go around the mount to get to the keys, but no major drama. Only thing I found was that it was too low without obscuring the clocks, and as such I would have to physically move my head to look at the screen.
I have now positioned it so that the arm etc comes up behind the clocks and the sat nav actaully sits above the clocks. This has only been possible after buying a bubble type screen to give the extra room. It now saves me physically moving my head to see it, just a downward glance now gives me full vision of the screen and the clocks.
Will try and get a pick soon :-)