Seems you have more gunning for cover B so far. Can I ask a question — will this book teach me things but make me laugh/smile along the way? If yes, go for A. It’s friendlier, more eye catching and doesn’t take itself so seriously. Or will this book turn me into a powerhouse in a meeting and make me hitch up my big girl trousers and cane it? If yes, then cover B for reasons many have said. Classier, slicker, serious about the subject.