When you say you will be there 2 days, do you mean you will have 2 Animal Kingdom days?
I enjoy both Tusker House and Satuli, but they are so different, so it's hard to say.
Tusker House has a very nice breakfast buffet, and of course characters, if that's at all important to you. If you want a big breakfast and don't mind your morning being scheduled, do Tusker House. If you'd rather not spend an hour eating shortly after getting to the park, do Satuli (or Flame Tree, but I don't have an opinion as I've never eaten there). Up to you! I liked my food at Satuli.