I'd vote for Amazon. Without innovation, Apple is going to stagnate. Their precious smart-device market is too saturated now and without Jobs at the helm, where is the innovation? Amazon still has many worlds left to conquer, because they have many more tendrils out there.
Amazon is such a behemoth that a certain free-world leader is scared of them and keeps trying to poo upon them. They are too smart for the likes of those fogeys. Meanwhile, Apple is starting to feel like the IBM of the 1990s.