I've been using Sony PCG-R505GL as portable/GPS navigation Co-Pilot system. VERY happy with it. New model has DVD drive build into the chassis.. mine has a docking station with DVD/CD-RW. Look into Sonys TR series.. they are ULTRA portables with 10 inch screen - very cool and better for GPS in my book. CON -VERY expencive top of the line model (can burn DVDs) is 3K