*adds Sweet Movie to his Netflix*
Salo is a generally well-made film, but it is a punishing, soul-crushing experience. I have a very high tolerance for kink, violence, horror, etc, but the relentless cruelty (and the relentless discussion and consumption of human waste) just depressed me for several days after. I think it may have been Pasolini's goal to punish the audience, so in that sense the film is successful.
Anyway, if Sweet Movie didn't leave you with a need to hug a puppy and stock up on Imodium, it's probably a more rewarding experience than Salo.