Previously owned a Garmin Nuvi 680. It served us well on a cross country trip in 2008. No longer working and we need to purchase a new GPS for another long trip to Alaska and would like some imput...
I have the Garmin Dezl 760, which is similar to the RV version. I like it and it has one great feature. You can enter your RV's profile into these models, ie: enter the height of your RV and then it will not make a route that would take you towards too low an underpass. It also can be put in automobile mode for regular routing like any other Garmin.