I have the FSMs and a Chilton and I think the FSM is worth its weight in gold. My biggest complaint with the Chilton is the fact that they jam multiple models into 1 manual. The pictures provided in the Chilton are pretty poor quality and sometimes are of a different vehicle. At least the Chilton diagrams usually show all the models involved, but the diagrams and illustrations in the FSMs are right on. I've had Haynes manuals too and I think the Chilton is slightly better. If you want the most comprehensive, find the FSMs and shell out the money. If you want simplified without technical babble and SST requirements, go with a Chilton or Haynes.