I caught rock to the windshield on vacation near Charleston, SC. I didn't let it ruin my travels however I dreaded dealing with my insurance company. I took the car into my local dealer just to ask about what to expect and ask for in a replacement. The local dealer stated use to use OEM glass and a recommended installer. I then contacted the insurance company and advised them of my wishes for OEM and the installer. They did their normal pitch for chip repair and after market glass. I held my ground and they meet all my wishes. My hat of to Allstate and the OEM replacement.