Which one of the 3 prices quoted in Kelly Blue Book do you use to compare to what the adjuster for the insurance company will be offering when a vehicle is considered totaled?

You will need to consider the condition of the vehicle BEFORE the collision. IF the tires were worn, paint faded and the body is rusting through you will probably get less than low bluebook. If the vehicle has been kept in the garage, still has new car smell, no body damage prior to the collision, the interior is clean and the engine looks like it had been well maintaned, (good serpentine belt, clean oil, clean engine compartment) you will get high bluebook or if not you certainly have grounds to contest his offer.