Not used a GPS before. Just Bikeline and other books for touring in Europe.
Question: Would you use a GPS, primarily for maps, on a tour like this? If so which one? and where best to get the map down loads? Do you have it switched on all the time while riding? What about charging?

We found in our 6500km tour in 2006 that our broad pre departure route/plan changed considerably as we met people. So no fixed route as yet. Does the GPS option allow this flexibility.

Is it an expensive gimmick on a long 6.5 month tour? We have two weeks to decide which way (no pun intended) to go ie GPS or not.

Many thanks - all tips valued - we are green on this one.