Dunno if it's the roughest, but the firsts scenes that comes in my mind are starring
Ayla Mia.
Especially scenes for ©lubG@p€.
Sure for Max Hardcore, it is rough, but also gross and disturbing. Because it is a true humiliation for the girl, and some are emotionally instable (many chances if you are a pornstar), so I guess this is very bad for them to do that kind of stuff.
Same for F@ci@lAbu$€ and some other sites.
I like it rough when you can see in the girl's eyes that this is what she really wants. Performers like Amber Rayne, Belladonna, Annette Schwartz and so on are made for this stuff !
I saw the video of the cute
Hellga Apple doing F@ci@lAbu$€, and I was really sorry for her... She sounded pitiful, and that's pathetic for me because porn should remain entertainement.