Agree with Deb & Bill, we just got back from Jambo yesterday and visited Kidani for dinner @ Sanaa and walked there on a separate occasion to check out the pool area.
Its pretty obvious Disney found a much cheaper way to construct Kidani .. you can tell the details (exquisite wood carvings, etc) are missing from Kidani .. and the whole place just looks cheap compared to Jambo IMO, especially from the outside. Also, although the pool area is nice .. they had to build it right up against the circular road for checkin/parking area , and its pretty small.. totally kills it for us.
The biggest difference IMO however is the lack of quick service .. I do not want to walk 1/2 mile round trip to get a full quick service restaurant .. we love having all of the quick service options even if only 1st thing in morning.
Positives of Kidani is they are 1st stop for all buses (however bus service @ Jambo was fantastic) and the room views (compared to
DVC rooms @ Jambo) are definitely better.
Your views may vary, but to us Jambo is a much better resort experience.