How they compare
Brazzers and Reality Kings are both owned by Aylo, the company behind Pornhub, and both bundle many sub-sites into one membership. They differ in style.
Brazzers is the name most people think of for premium porn: big-name performers and polished, high-budget production. It costs $33.99 a month or $121.99 a year at the time of writing. Some find it formulaic.
Reality Kings is one of the largest reality networks, with dozens of recognisable series and an enormous archive. Some series no longer update and older scenes look dated, so check that what you want is still being made.