I have leaned toward Haynes as it seemed they had more or better wiring diagrams. I have a Chiltons and Haynes for an XT6 (Subaru) I had, don't believe the Chilton even ahd a wiring diagram. This might sound bizzare. I have about 8-10 Haynes manuals for various cars that either one of my kids or myself has owned. Not once did a Haynes manual help me out with what I bought it for. At best, ususally gave me an idea to go on. Down the road, after having the car and manual for awhile, they have come in handy. If $$ available, the shop manual is probably the best route.