Ive seen videos of the sat nav in the RNS510, and dont like the map interface TBH, since its more an ariel view. I prefer the Tom Tom interface where its showing you the route turn by turn 'from the ground', rather then a more ariel view - or does the RNS510 also have this view?
Virtually all modern OEM factory fit Sat Navs now have 2D (looking down directly from above) and 3D (actually 'pseudo 3D') (looking slightly above, and from the rear). They also have split screen funtions too, and are infinately better than any freestanding sat nav, such as a TomTom, due to their 'dead reckoning' functions.

But, as they say, ETTO.
