Conclusion: Accurate to an astonishing degree, the WAAS/EGNOS driven device will literally see you from door to door, but then this is GPS and that's the standard you expect. Connection to satellite is stable and this all-in-one unit provides a far better signal than my previous foray into the world of in-car GPS via a PDA-based TomTom Bluetooth unit.
Pros: All in one unit, without the connection problems of a PDA assisted device, Excellent pre-loaded map content, Suitable for a wide range of users and easliy transferable between vehicles
Cons: It is an expensive piece of kit. If you already have, or wish to buy a PDA, cheaper alternatives out there may sway you from an all in one.