I love both versions about the same, although I will say that the movie does kind of muddle the message of the story. In the movie there were some signs that a lack of planning and foresight led to the disaster being as bad as it was, but ultimately things only went south because of terrible luck and Nedry's meddling. The book is much more emphatic on the idea that the entire fundamental design of the park and the systems governing it were flawed from the start because of hubris and incompetence. Just off the top of my head you have the lack of restraint on the type of animals they created, slipshod security because of wanting to save money, complete reliance on automation to maintain the park without any sort of redundant control, everything involving the staff's complete failure to recognize that the dinosaurs were breeding, consulting Malcolm, a guy who knows what he's doing and does it well, about their plans for the park and balking when he correctly pointed out all the problems with their design, and probably a lot more I'm forgetting.
It's funny because Malcolm in the movie so eloquently summarizes this theme during the lunch scene and yet it doesn't apply nearly as well to the movie he's in as it does to the book it's adapted from.
Malcolm's long-winded speeches in the book are nonsense though, that's just Crichton navel-gazing in the worst way.