I looked at all of them, Hagerty had the best price, but was the same as other companies that do not allow daily driving, and limits on miles. I got insurance, full coverage on the car from USAA. There is no Agreed value, they will use Vintage car guides to value your car as stock. If you have all your receipts, you can present them to increase the value of the car.
Absolutely full coverage for $600 yr, no restrictions or special rules