any suggestions on the best maps for planning and driving?
When we picked up our car, we asked for any map that our rental company could provide, they directed us to a bookstore down the road. Having a Michelin map before you receive your keys will be a good thing.
Michelin maps for sure. The country map plus detail maps for any areas/towns you will visit or even go through. Get a tablet and download an off-line map program capable of plotting GPS info. Have your navigator practice with it at home. Downtown Athens at rush hour is not the time to refer to a paper map! (Been there, done that - ugh). And your pre-planned details will go bye-bye more often than not.