Like all movies scripted/adapted from books, The Bourne Identity, The Bourne Supremacy, The Bourne Legacy (masterpieces from the mind of Robert Ludlum), when adapted for a screen, lose something. The first movie with Matt Damon was solid, but went askew plot-wise within about fifteen minutes. They were having to try to update it about thirty years as the original book was set in the mid 1970's without all the modern technology. However, what makes the book so awesome is not the fighting, espionage, etc. It is the psychology of a mind struggling with something like an induced dissociative disorder/multiple personality disorder and how the individual is trying to suppress the original personality to accomplish the programmed mission personality. Also, in the middle of the book there is an awesome several page description of how a clandestine operative works on foreign soil. There is some awesome stuff in there you can use in real life even if you are a self-defense expert. Right out of CIA/Delta and SEAL operative type training. Well worth the read if you have never read it.
But action/suspense? The Good, The Bad, and The Ugly hands down just for the soundtrack...or maybe even Pale Rider.