I agree with lanerd... have been with GMAC (National General) for a couple of years. Besides good rates they are the only one I've found that will let you put a vehicle in "storage" and reduce your premium accordingly. A phone call puts all of your coverage's back in place when you hit the road.
Also, had the MH in storage mode and needed to take it to the dealer for a minor problem I wanted fixed before we started traveling this year. I called Nat General and they have me 24hrs to get things taken care of without taking the unit out of storage yet with full coverage for the 24 hours.