Most likely got into this discussion too late.
Cheerio you are doing the right thing in shopping around. Insurance can vary significantly from company to company and state to state with identical coverage. Numerous factors go into your rate quote driving record, credit rating, coverage wanted, garaging location etc... Every year since 2000 I have been going thru the rate comparison drill at renewal time. I have been with Natonal Interstate
http://www.natl.com/ since 2000 and for me they have been consistently the lowest for me here in Virginia. I have found that Foremost (super insurance company for RV's) has been the most expensive quote I keep getting. However my sister who lives in Mass continually gets the lowest quote from Foremost and National Interstate is her 3rd lowest quote.
I've had one claim with National Interstate to the tune of $7500 (right front tire blowout with damage to the wheel well and side of M/H) no questions asked and had the check in my hands in 6 days. They were a pleasure to do business with. I to utilize USAA for all my other insurance and have never had an issue with them.
Jeff