Actually, I've just remembered (and probably this is also in your document, but my Swedish is extremely limited
) that actually one of the most annoying features of the 276C / 278 is the way addresses are entered on the unit when planning a route from the unit. The interface for searching for places and street names is leaps and bounds behind the Zumo, the 276 / 278 uses the old arcade game style of scrolling through each character in the name (i.e. you roll through the alphabet using the up / down key in order to get the required letters) for that reason, route planning using addresses is better done either via postcode (where possible) or from your computer using MapSource itself