BUYING NEW RV OUT-OF-STATE -- ANY TAX PLUS OR MINUS???

Not RVs, but I've bought two SUVs out of state in PA and DE, and never paid any sales taxes in those states. I paid the VA taxes once I titled the cars in my state.

In general, you pay sales taxes in the state you title the vehicle. You wont be able to register to get tags until you do so.

The other caveat you may have to be aware of is how long you have to register the vehicle after purchase. PA/DE provided 2-month temp tags. But VA requires vehicles to be registered in 30 days.