I hate the taste of bananas in every way, shape, and form; I find them absolutely repulsive. So much so, that even the tiniest hint of banana--real or artificial flavor--completely ruins the taste of whatever it's in and I will not eat it. (Ironically I like most other fruit, with the exception of melons.)
So I guess my favorite brand would be one that makes plastic fruit. ...Or maybe Rare bananas--you know, the ones in the DKC games?