If you are asking about the difference in savannah views, it is our opinion that Kidani offers the better views. I know that is just our opinion and others might think differently, but we have had much better luck viewing animals at Kidani.
Now, that being said, we have a Kidani GV for December and we are wait listing Jambo. We are wait listing Jambo for the counter service, bigger store, and grander lobby. However, I am second guessing whether to stay on the waitlist. Some of the GVs at Jambo could give you not so nice views where all GVs at Kidani would offer better views (again in our opinion). Also I'm not sure I want to give up the extra sleeping/living area in the loft of the Kidani GV. Kidani is also the first bus stop and that could be important. I agonize over what is the best fit for us on this upcoming trip and what fits best with the cast of characters that will be joining us.
Good luck on your decision!!