Tip: When it comes to classic insurance, don't purchase solely on the cheapest rates. You can, but that's rolling the dice. Make sure you know upfront what their requirements are as how to park/store and use your vehicle (locked garage, car shows, parades, minimal use, etc.) and how you would get paid in the event of a loss. Ask any and all questions of the agent before you buy. Consider the upper tier companies of the industry as well. A well-established company usually is well-established for a reason. Ensure they're licensed for your state as well. They'll usually tell you if they're not.
The dis on Grundy may be warranted, but then again, if they were upfront on what they required, et al, then you didn't lose out on any money. So no harm, no foul. My G-bodies got rejected by Hagerty because they were "too new". Really. TOO NEW?? WTF? Ok, called Grundy and they said to send pictures of the sides and ends to prove no damage, and a check after they gave me a quote. I didn't get upset, I just went somewhere else. If Hagerty don't want my money, Grundy will gladly take it. And I get the peace of mind my cars are covered while locked in the shop. (except for damage from acts of war)
A word about photos. I'm a firm believer of them. Keeps everyone fairly honest. Reason I say this is that someone with a dent on their fender insures their car, then complains about someone denting their fender, insurance pays, and if that happens enough times, then the company raises insurance rates on everyone. Also, the vice-versa part- without photos proving the car is in great shape, you run the risk of the company COULD say that dent that someone banged into you at a car show was already there and won't fix it.
For the most part, classic car insurance rates are pretty reasonable compared to regular insurance. Unless you have a one of one car that's worth a ton of money, anyway. Most of our G-bodies aren't worth a ton, so insuring them usually isn't bad on the wallet. I look at it like this, those who gripe about the cost of classic insurance probably doesn't need to own the car in the first place. You have to know that's part of the maintenance/upkeep of owning a "classic" going in.