I have a Garmin Nuvi 750 and Mapsource. I received the mapsource software from Garmin for free after a couple of phone calls. The software works for me. It has great road detail. Updates cost $$, but are only nessesary maybe in a couple of years. You can plot your own routes on Mapsource, save them on your computer for future use and you can easily transfer the routes to your gps device. After I'm done with the route on the gps i just delete it, this way it doesn't use up memory needlessly. If I need it again in the future it's saved on my computer in a GPS Routes folder. I also found that I can plot routes on the gps but with the small screen it's just not practicle. I haven't had any other mapping software expeirence. I did find this forum listed below usefull. Hope this helps some.
2007 [COLOR="Silver"]Silver[/COLOR] 650 ABS
Back in the saddle after 23 years
1982 Blue Honda CB750K
Farkles: OEM Center stand, Hepco & Becker Crashbars, Grip puppies (Homemade), Back Rest (Pirates Lair), Nelson-Riggs CL-850 Touring Deluxe Saddlebags, OEM Hand Guards, short tinted wind screen