I have both too. nRoute seems to have more functions regarding routing & tracking, so why does garmin still have mapsource (it must have something extra). Anyways, I'm going with nRoute. Thnx for the help.
Car: 2002 Mitsubishi Magna EI CarPC: SP13000, M2-ATX, 512 MB RAM, 120 GB 2.5" HD, X-Fi Sound Card, Xenarc 700TSV, Garmin 18 USB. Audio: 2X15" Rockford Punch Z, 1 Rockford Punch 2-ch Amp, 1 Soundstream Lil Wonder II 4-ch Amp