Hi all, I now feel the need to get the integrated NAV system for my 300C, having tried an outboard IPAQ solution for a while. The REJ system is for Europe and the REC system is for the US. There was a post here earlier which said the European DVDs cannot be played on the REC system. However, can the US dvds be played on the REJ system? What is the essential difference between the european NAV (REJ and the US NAV (REC) systems?