what action figures should I get

I'm a collecter and I do figure art for star wars figures but I'm looking for some new figures I already have a young Han solo and a unmasked Kylo Ren coming but I'm thinking of buying An old ben kenobi. Also the Fetts but I don't know if I should get Jango or Boba. I am in the black series 6 inch figure line so any recommendations would help out.