If you like Le Child and Vince Flynn, you'd surely like Nelson Demille. Ditto Michael Connelly and Jon Sandford. Also John D Macdonald's Travis McGee series from teh 70s and 80s.
Also, try this author mapping web site (
http://www.literature-map.com/) You type in an author's name, hit return and it creates a chart of similar authors; the closer they are to the name you entered, the more like him they are.