I know it has been said millions of times, but the 70s and part of the 80s erotica is still the best. For some time now, videos have been about how vulgar and disgusting people can get and overly focusing on sex acts, and little to no regard is given to subtle elements of erotica (like Tinto Brass's stuff). Plus we have all the mountains of homemade/amateur junk that fills the internet.