Such a tough decision! Both resorts look awesome. I'm favoring the food at WL, the views at AKL, the location of WL ... Then of course there's price. WL is less expensive when comparing a std WL room vs. a savanna view AKL room. This is going to be tough.
We have stayed at both resorts and would consider the Courtyard view at the same level as the AKL Savanna view. We had great stays at both. Preferred the Club better at AKL, along with the pool. Watch out for standard view, since it does include parking lots and service areas.
WDW is big and travel times can start to add up based upon your plans making location a factor: AKL to MK is around 20 minutes by bus only. WL to MK run 8 (bus)-14 (boat) minutes. WL is ideal for a trip focused on the MK and Epcot, especially if plans include special events at MK or early morning and staying until close. Remember
DDP also brings in a large volume of non-resort guest every night, so the lobby/TS areas at both resorts and bus system will be busy.
AKL can provide a remote feeling as you can easily feel like a vacation inside a vacation with its theming. This can be fun for a vacation feel, but can feel remote if you are wanting Disney in the forefront of your trip. The viewing animals is a unique experience, but other deluxes offer unique experiences too. Feeding times at designated feeding stations provide the best viewing; normally when you will be getting ready in the morning. We prefer a deluxe with water recreation and multiple forms of Disney Transportation which is absent from AKL. Jiko TS is a plus for this resort. We stayed club with Arusha savannah
Sunset Savanna: Male Giraffe, Bongo, Impala, Thompsons Gazelles, Ostrich, Ankole Cattle, Waterbuck, African crown cranes, stork and blue cranes.
Arusha Savanna: Pelicans, geese, giraffe, ankole cattle, zebra, Wildebeast, eland, gemsbok (This is the Savanna in the center of the resort)
Uzima Savanna: Giraffe, Impala, Kudu, Bongo, Blesbok, Thompsons Gazelles
AKL resort viewing guide
http://www.wdwinfo.com/wdwinfo/resorts/aklodge/animals.htm
AKL Map
http://www.wdwinfo.com/resortmaps/aklmap.htm
WL theme was not as appealing to us, since we have done extensive travel in the Northwest Rockies and seeing it in Florida with Spanish Moss was different. Overall, the theme is well done with the exception of the "geyser." Nice resort, good location, would rate the bus transportation better than AKL in our experiences. The MK boat provides an alternative to return to your resort. Electric Water Pageant and the ability to see MK fireworks adds to the experience. The marina allows you to rent boats and experience the MK area. Other options are also close by at the CR marina. AKL can make some people feel a little too remote, but WL can make some feel you are the black sheep of the monorail resort, but it is priced accordingly.