We use "My Home Address"
http://www.myhomeaddressinc.com out of Emery South Dakota. This allows us to be South Dakota Residents. South Dakota has no state income tax, low truck and rv insurance, low medical insurance, and no vehical inspections. "My Home Address" is in a small town in a small county between Mitchell and Sioux Falls. This gives us great service for vehicle registartion and quick response to any questions we have. They service over 2000 RV'ers. Also they set us up to vote by absenty ballot and you do not have to worry about jury duty.