In my opinion the bentley book is far more better. It goes into more detail and has better pictures/diagrams especially in the wiring diagram section which is 1/3 of the book. Only down side is the cost. I paid 50 or so for it. The haynes is a cheaper manual, if you've ever used one I think you probibly know what I mean. They seem to be more general and not as detailed. It didn't even tell you how to test for a bad fan clutch or mention the plastic impeller. I like the Bentely much better.