This is going to sound really stupid but I havn't really used it for navigation as such. I used it once when I came home from the CR on my own because I had hospital to ge to. I done the usual satnav trate of telling me to do a bloody u-turn and even though It records your route with pin point accuracy, the actual maps in the unit are a bit p1ss poor. The unit is mapped for UK and Europe which is good for it's size, I'm going to look into what I have to do to get stret level mapping for the uk.
When ou get back from a ride and connect it to the pc, it only takes 2 or 3 clicks to display some quality stats and the map on google earth of where you've been.
I want to use the ghost rider now on it. This means I can replay and old run with a shadow (of me) on the unit to try to better it.
To sum up.
The best for collecting stats.
Maps would be better if for UK only.
It is ready to receive a power meter also.