Had to go with Bing Maps API as Google requires "a contact to sales" before allowing the API. That means I should have a well defined use case and pay something for the privilege. This time Bing map tiles should be good enough.
Try
http://www.venhola.com/maps/geo2.php#64,26,0 for early testing. Downloading maps won't work at this url as it's a work in progress.