A lot of people insure with National Interstate. They gave us the best quote. Our coach is 'out of the norm' so only three companies insure at the level that we needed.
Another thing you might want to consider, take the AARP safe driving computer course. It's about $20 and you will get a discount on your insurance. It's an 8 hr. course and they give you 30 days to complete it. I finished it in about 4 days, working on it a couple hrs. a night.
I actually enjoyed taking the course. It's not pass or fail.....the certificate just shows that you went through the whole course.
It gave us a $1,000 discount on the coach and also a discount on the car insurance (with a different company). The certificate is good for 3 yrs.
MM.