Dischick4778,
There are a few things to consider when deciding between Kidani and Jambo. All of which come down to personal preference.
1. Number of Bathrooms: Jambo 2BR has 2 full baths, while Kidani has 3 full baths (1 off each bedroom, and 1 off of the kitchen)
2. Dining options in the immediate buildings: Kidani has one TS restaurant while Jambo has multiple dining options including a counter service option.
3. The Villas in Jambo house are all located on the upper floors, while Kidani has them on all of the floors. With the lower floor options, the views of the animals are a bit more intimate. (Only matters if you want a savanna view)
3. For younger kids, Kidani has a great community hall with movies, games, activities, etc.
4. Bus Service: Both buildings share the same bus line. For the MK, Epcot, DHS, and AK routes; the buses stop at Kidani first, then Jambo, then proceed to the parks. For DtD; the buses stop at Jambo First, then Kidani, then proceed to DtD
Also, when booking a 2BR, consider if you want a lock-off unit (consists of a one bedroom unit and a connecting studio unit . The studio unit will have a queen bed, a pull out couch, and a kitchenette) or a dedicated 2BR (the 2nd bedroom of this unit will have two queen beds)
here are a few pic links:
Jambo:
http://allears.net/acc/g_aklv.htm
Kidani:
http://allears.net/acc/g_kidani.htm