I read all the posts to date. I've had a stroke of bad luck with truck stones and have had 2 aftermarket windshields...I can't tell the difference. (The original Volvo unit broke with a stone, as did the first replacement.) They seem as clear as the old volvo pitted one was when it was new.
Not sure why one would be curious as to whether S70 and 850s took the same...these things cannot be removed afterwards without breaking as far as I know. And I'd rather have an aftermarket than a used original. But as the the roof line on 850s and S70...as far as I can tell,,,and we have or have had 5,,,,3 S70 and 2 850s. The windows seem idential...changes are to curves on the front and rear facia metal. But when you have your windshield replaced...just ask the shop whether the parts are interchangable. If not...I'll fall on my sword.