Some very good friends of mine own a body shop. Easily one of the best in the entire SW. They do amazing work. The last time I took my truck in, after some clown at the lake, modified my door, I saw a sign on the wall that made me laugh. I even took a picture of it but have since deleted it.
It basically listed most of the "Discount" insurance companies like Geico, Dairyland, The General, a local Fred Loya, and some others, that will only pay for aftermarket non-oem parts, requiring a less than perfect repair. It stated the shop will not use sub-sub-par parts, so customers with those insurance companies may be responsible for the difference between what their discount insurance will pay, and what a proper repair will actually cost. State Farm, Allstate, USAA, and other good insurance companies were not listed.
I'll say this: I do not want aftermarket, crap parts on my vehicles, and if my insurance company is requiring that, no matter what I'm paying, it's too much. Good insurance is defined by more than monthly cost.