I live in Okinawa and have compared a sample of uuds Okinawa map with the free one. The Okinawa map uud did definitely has more detail than the free one. I’m not sure how much accurate the detail is but will have a better idea today after I hit the road! The biggest overall difference is that the one uud is offering covers all of Japan including the southern islands and is not free. Won’t know for sure just how different they are until I get the complete product. Once I get the product loaded in Mapsource I will be able to accurately compare the two. I haven’t been looking for long (maybe a month) but from what I can see uud has the only product out there that covers all of Japan, includes roads, has topo, and is in English. If Garmin had something I would have bought it from them. After searching this forum it was abundantly clear that other people were facing the same problem. Hopefully in the future Garmin will get with it and deliver on an obvious customer need. In the mean time I hope UUD (or anyone else) capitalizes on the situation and improves on what’s out there.