I find address search is a bit shonky with the non-official maps. Fine if you're following routes you've already made or you've already added places as waypoints/POI but not always great for searching.
OSM does not fully support post code search, but I find that on device routing is a very poor option due the garmins inbuilt algorithm that can send you on some very long and seemingly uneccessary detours.
Wow thank you. How does this differ from the maps that come with the navigation bundle? Is there a big difference in quality?