We've had Progressive for our Class C Jayco for 2 years. The first year we had a $7K claim (don't ask!) that was not a motor vehicle accident, but cause by "user error". We had a great experience with the Progressive agent here in Idaho, and our claim was covered completely other than the 1K deductible.
I was a little nervous to get our renewal notice the next year, but our premium stayed the same. This renewal was 7 months after the incident--so Progressive had plenty of time to see there was a claim on our policy. We will get our next renewal in August of this year, so who knows what will happen then.