I have 3 months in the region this winter(Jan-Apr), so I'm hoping to get a little riding done in Vietnam and/or Laos in addition to a lot in Cambodia. Basically, I'd like to know the following: -- Map recommendations, GPS compatible, preferably, for riding specifically. -- Rental advice: costs and feasibility, type of bikes available, and where. -- where to find up-to-date info on road conditions? Any good books?