Finished Start with Why, and Radical Candor.
Start with Why was weak and definitely fits the Emu method you mentioned above: find some cheese analogy, find some examples to fit, and blather on and on. Use it to sell Ted talks and corporate seminars. Part of the weakness is because so many of the examples are now poor examples due to the tides of change in history. He repeatedly cites examples like Harley, SW Airlines, Apple, Walmart, GM, Microsoft, and in many cases like Harley and SW, the "today version" of the example actually refutes his point. But my overall reaction to it was "what is his point?" On the surface it seemed to pass the Emu test, but think more about the statements he makes, try to apply more examples, and it just has no substance. Yes a company should have a clear goal or mission statement and employees should know it and feel it, but that is not the secret sauce that has allowed some companies to succeed and others fail.
Radical Candor is a useful one. I think it is too wordy and needs editing, it would be easier to implement and if it had a clearer statement, and it gets a bit lost explaning how to handle edge cases, but the message and techniques are applicable and useful for most.
Of what I've read in the past month (sort of cramming management books), I'd recommend Turn the Ship Around and The Undoing Project to anyone/everyone (and bought copies of Turn for some of my staff), Radical Candor to some, TF&S to some. Would not recommend Start.