The Rand Mcnally RVND 7710 just went on sale. HUGE discount on these now as full price on them was 400 bucks this spring. This is a large 7" gps from the trucking industry that has been updated specifically for the RV rigs.
Thanks for the reply joelek. we purchased that 7710 from camping world for $224.00 and put in several address to compare with our garmin but both times there was a 45 mile difference. plus it weighed 4 lbs. also it came with a wall charger and it did not work so we are looking again.
thanks ted
Let us know which one you like Ted. I love Garmin Nuvi models but would not use one of those for RV use. My Nuvi took my car on shortcuts that the RV would not want to be on. I like wide open spaces when towing the RV.
The 7710 was adapted from trucker GPS. I imagine shortest route for a semi is not a good idea so it defaults to safe route which many times is longer.