Please let me know if you have any specific questions about food. I work at Purrs and Gurrs pet bakery and holistic food carrier so am quite experienced with food recommendations.
For our Basenjis' I always, always recommend Innova's EVO. It comes in red meat and white and it's top-quality, NO grain, high-protein, low carb. It's a great food that I personally use and have seen GREAT results on.
Also, Solid Gold makes a good called Barking at the Moon which is quite similar to EVO.
Other than these foods here, Blue Buffalo is a good choice too.
I'd suggest staying away from grains and getting a food with a low carb, high protein breakdown.
Please let me know if you have questions.