My current insurance expires at the end of this month (GMAC through Good Sam). I had a claim last spring so they raised my rates last summer and my renewal notice this year had a smaller increase. I suspected that would be the case and started checking other companies a week ago. (I can understand trying to get your money back but chasing me to a different company gets you $0.)
Looks like my best deal will come from National Interstate. It's available through several insurance brokers but that also took some work to find out what my actual premiums would be. The first quote looked extremely low. I contacted the agent again to remind him of the claim last year. He said they just quoted based on driving record (there was no police report filed). But, the questionnaire with the application asked about recent claims so I persisted. He finally plugged in the right info and gave me an accurate quote - higher than the original quote but still lower than the other quotes.