The Mapshare is a good device which holds TomTom for years over water. Unfortunately, the own Mapshare data after each map update path and 99.9% were not included in a card. To get to the map.
Just about TomTom Live Traffic his works, just as bad are the maps of TomTom. Some changes have already been implemented years before completion, but the rule is the new roads, and this is also very big or very busy roads are built only after 3-4 years in the cards. The best example is the Hamburg area. I as commuters use a Navi to get to work to a timely warning of traffic jams and construction sites to be. The area around the highway exit HH-Waltershof / Finkenwerder is catastrophic. There was pretty much rebuilt several years ago. This conversion was mentioned only 3 years after completion of construction in the cards. Now the busy Finkenwerder ring road is still not drawn into the card, although it is open for almost 2 years. All other navigation providers have built since the beginning of the road. I do not think this area is an exception.
I have the Navi quite a while and there have been many updates, not even something has changed to the errors in my region, be it new roads or changed speed limits. Therefore, I see no reason to buy it further map updates!