I covered this topic in some wheel spin articles here last year.
I am an insurance professional.
Against popular opinion, insurance companies really just want to pay what they owe and move on. There is no great victory, benefit, or reward to an adjuster that cheats somebody out of a total loss settlement. Insurance companies have much bigger fish to fry.
It is rather simple (unless you have a specialty policy), they owe you for actual cash value at the time of the loss. In other words, what the car could be sold for a split second before the crash..regardless of what you paid for it, what is owed on it, or what you spent on it last month.
They usually pay NADA retail value...which is always higher than what you can expect in a private sale of your vehicle.
I have to admit, that settling Vette claims can be tough, because most owners are unrealistic. It is not unusual for them to demand far more for their car than it would ever sell for, much less what they would pay for it given the chance to buy it over again.
Please...speak to your agent. I hope you deal with an agent and not some 1-800 number with some young uniformed hourly wage person helping you set up the policy that may one day become very important in the event of a serious loss.
Good luck on your decision.