Just down loaded the 100k Tassie Topo maps on to Memory Map, they work well, some areas are not up to date, but that is easily fixed. I just used map my ride and put those missing roads in, put them the same colour!
One thing I did do was spend the time it zoom in and down load the hole of Tassie, by just moving all over Tassie. Now I have done that it is as quick as the 250k map & if you do find a missing road it is so easy to switch back and forward between maps.
2011 Triumph Tiger 800xc