The choices are of course:
Should I include Jamie? He's only an adopted Cartwright. Well vote for him if you want.
My favorite is Hoss. Adam seems a little stuffy and Little Joe is cute, but immature.
Hoss just is so interesting to watch. He works well in a comedy episode as well as the more serious episodes. He is even believable as the love interest. No wonder the show couldn't last very long after Dan Blocker's premature death. I'm sure it was very hard for Lorne Greene and Michael Landon to go back to the set after that.