The Civic is probably going to be responsible for your front end damage. The Oddyssey is going to be responsible for your rear end damage because he was following you too closely and didn't leave enough room to stop in an emergency such as this. That's why your insurance company is trying to cheap out on your repairs. Fight them on it tooth and nail like others have said.
That sucks...one insurance for the front and one for the back, uhhhgg.
Speaking from past experience, here's what I would do. Also conferred with the insurance agent/wife on this one and she is in agreement.
-Get the 3 estimates
-Go with the body shop you feel most confident in. Ask questions...a lot of them. Find out who is going to be the lead guy repairing your truck. See if you can get the manager to steer the most experienced or the best guy to your vehicle. Talk with the guy he recommends. BS with said guy for a while. Find out what the repair guy likes to drink/eat. Be discreet about it. I've learned a 12 pack/bottle/restaraunt gift card "pre thanks" to a guy doing work on your ride gets way better service on just about everything car/boat/motorcycle related. Ask to see some of the stuff they have recently fixed. Look for a car in the shop that is complete and ready for pickup. Ask to see the collision photos (they wil have them on file) and ask if you can take a look at the car. A good shop will be more than happy to show you all the things that were jacked up, what they fixed, where they painted etc. A good repair wil be seamless and very hard to identify. One of the easiest things to ID if it's a crappy repair is overspray or trim, door gaskets, wheel wells, etc.
-Don't think that just because they are a "dealer repair shop" that they're going to be the best. I got T-Boned in my 06 Jetta. I wanted it done "right" so I insisted on the dealer body shop doing it. WRONG ANSWER. Long story short, just about everything they did was shoddy. I was excited to have the hoopty back, signed for the car and took off. in about 5 minutes I found out everything was crap. Bad gaps, trim pieces not lined up right, leaking water, leaking air, doors not closing right., rattles...nightmare. I returned the car back to the body shopt. It was in and out of the shop from Feb until May trying to get things straightened out. It never was right after that hit. When I smacked the semi tire, the car was fixed properly the first time and in 3 days as it was done at a State Farm preferred shop. Much better result. Anyway, back on subject. Talk with and select who you think is better.
-If they decide to repair it, DO NOT take possession of the car unti it's 100% right. Once you sign for it the body shop is on their way to getting their final check. If you come back, they aren't going to be as apt to help you out as now they're working on their dime. Again, do not sign until you're satisfied. Keep your rental car...go and inspect. If you find something wrong, let the shop manager know verbally. Also send him an e-mail and cc your insurance company and walk away. After it's fixed again, same thing. Inspect...if you find something wrong, notify verbally/writing and walk. Don't inspect and try to find everything all at once as this isn't your job...aka don't try to help the body shop fix their incompetence if they have any. If you have a digital camera, take pics and attach them to the email. Check all the rubber to metal seals. A good trick is to use a $1 bill or a $100 if you're rich. Stick the bill against the area metal or rubber that is going to contact metal or rubber. Watch your fingers. Close the door. That bill should not pull out easily anywhere it's properly sealed. A poor seal will be identified when you pull out the bill with minimal or no resistance. I know it gets dark early up there is Canada these days, but try to inspect during a bright sunny day so any variation/blemish/error in the paint etc will stand out.
-Diminished value. With the advent of CarFax and all the other sites out there like this, a hit like this on your car will probably show up on a report. Regardless if the hit was minor and the repair was 100%, everyone knows the vehicle is going to be worth less. Example: Value of a never been wrecked car vs CarFax "hey this car has been in a wreck" before value at trade in or private sale. The virgin car will always be worth more money. You can be compensated for the diminished value your car now has.
-Your insurance company/the other company isn't going to let you know about this, but it's out there. The insurance company (yours and/or theirs) will try and tell you there isn't such a thing. It only applies to salvage vehicles. They don't do that. Blah blah blah. Yes, they do. Don't rely on the insurance departments figure, as it will ALWAYS be lower. Do some research on your own. Go to (best option) and or call as many Toyota dealers as well as independent car dealers as you can stand. Get your VIN. Ask for top dollar trade in/retail value of your truck and get it in writing. Also ask for top dollar/trade in value of your repaired vehicle and get it in writing. The difference between the two figures is your approximate diminished value. I did this with my VW. Insurance (other company) offered me around $700 --I declined. I then gave them all the paperwork and staked my claim of an average of $4000 diminished value. This figure was an accurate average of the pre/post collision value of the car I had. After it was all said and done, because of the extensive documentation, they offered $2500. I said No again. They then threatened to retract the offer entirely. I threatened a lawyer. They became more enlightened and offered $4000 which I took.
That is all for tonights tidbits in insurance.