Sophie S-S

Which is a better subject to do in IB? I am already doing Chem and Bio, so I have a lot of science on my plate but I don't mind doing another (even though its technically not one). I've heard that Psych has A LOT of essays but I've never done business management before in my life. I know its subjective but are they both enjoyable subjects? Is one easier? (not a big factor bit nice to know). If you did/do both and could only do one which one would u choose? thank you very much for any information you can share