I say breakfast. We had breakfast there about 11 times on our last trip (we were staying at AKL for 21 nights), we loved the breakfast.
We only had dinner there once, none of us were really into the dinner, but that was just our personal tastes, it was ok, but nowhere near as good a meal as we had at Jiko, Yak and Yeti, Mara to name a few, but again, that was just our personal tastes and we had allergy issues too so were restricted with what we could eat on the dinner buffet.