AIG has been my insurance company for about 15 years for all of my cars, except the B...for which they referred me to American Collector and I pay $58 per year for an agreed value of $5000 and escelates for inflation automatically. I have shopped online for other companies, but AIG gives me the best deal I can find. Progressive.com gave me a great deal on insuring the Bass Tracker, but even told me to stay with AIG for my cars.
Many years ago, AETNA outright refused to renew my policy (written through a long time agent who was a family friend) three months after I bought my 69 MGB...after I sold it, I found out that if I had changed my coverage from their "AutoStrite I" policy to their "AutoStrite II" policy, I would have had no problem, but my agent and the company didn't tell me that...I found out later through another agent who insured half of the fleet where I worked. Aetna lost that business at the next renewel...revenge can be sweet!
Bruce