Hagerty is ok, but their towing assistance is poor. I waited for 2 plus hours, and then they called and said: sorry, no flatbed service available. I said I paid for that service, and I won't put a 20k car on a tow truck. Fortunately, my Son-in-law came and babysat the car, while I went and got my own truck and trailer. Then, I Insured an Impeccable Demon a year ago worth every bit of 10k, and they refused to go over $8,400, by the so-called book. So they do put limits on value. at least in my experience.
The vote is still out in my case.