Safelite will install OEM if you insist and your insurance covers it, mine always did. Non OEM windshields could have clouds or other imperfections in the glass or lamination. Could be issues with glass hardness, sound proofing etc. Or it could be fine. Why take a chance. Yes I'm sure some one will point out that OEM can have it's issues as well. My 1995 Jeep had bad factory glass windshield when new and was replaced under warranty. The issue was in the lamination. My dad owned an auto body shop for many years and always recommended OEM glass to customers. Always it was used on our vehicles, he would make sure of it.