I'll tell you this, I have owned both the RV760LMT and still own a Dezl 760. Forget about hazardous routing on either unit. We routinely travel to Philly and go down I-70 to hit I-95. Both units will try to route me via downtown Baltimore and through the tunnels (No propane allowed) no matter what the settings. I like the Dezl because of the customization dashboards but when I travel that route, I switch to car mode. Besides that, we stay at the Philly KOA and both units try to route me all around the area (45 minutes extra) even though the routes are approved for RV's. Look at your maps, know your route. For me, GPS is nothing more that a trip minder, how long, how far, time to there, etc.