This year will be my 24th year in the collision repair industry. If you trust the body shop you have chosen, they should be able to help you with all of these questions. Most big insurance companies either have their own formula for figuring out the value of your vehicle, or use something like NADA
I would highly recommend trying to settle with the other company as a claimant. Like someone stated before, you may, or may not get your deductible back in the end if you use your own carrier. If things go south using the other party's insurance company, your company is contractually obligated to cover your loss. I am more than happy to answer any questions you might have over a pm if you'd like (nothing in it for me, i've just done this a lot). Also, as someone else has mentioned, make sure you get sales tax and license plate transfer fees in your settlement. You can't buy a new car without paying those fees. Feel free to ask anymore questions.
I would highly recommend trying to settle with the other company as a claimant. Like someone stated before, you may, or may not get your deductible back in the end if you use your own carrier. If things go south using the other party's insurance company, your company is contractually obligated to cover your loss. I am more than happy to answer any questions you might have over a pm if you'd like (nothing in it for me, i've just done this a lot). Also, as someone else has mentioned, make sure you get sales tax and license plate transfer fees in your settlement. You can't buy a new car without paying those fees. Feel free to ask anymore questions.