Well all are very good points. I do need some sort of navigation. Not keen on wires dangling, so tom tom is out of the question. It can be a bit cumbersome with holding/looking at phone or entering postcode and driving too. An important point was the speed camera notification, didn't think of that.
I think I'll go for it, but the basic mind you. As much as the Pro screen looks good, we're talking leather option money. £700 odd is just about acceptable.