u/Priestical

Which should I go with, I want to buy class and advanced fantasy. Should I get the Old-School Essentials Classic Game Set & Old-School Essentials Advanced Expansion Set or should I buy the Referee's Tome and the Player's Tome? Which is the better value?

I'm aware that the sets are supposed to be the 2 core books broken down into several books each but do you get more with the sets or the books?