Since the postcode search feature has been added, it seems to sync with my device every time I connect (which takes a while).

Using the cheap chinese 5 inch device - with post-codes loaded. go into 'route View' then load a route and you can use ' insert' to put your postcde in and use it as a waypoint.

It is a bit annoying that it always loads the database when syncing, but it only takes seconds so I can live with it for now.