I've read a couple of the Jack Reacher books, I thought they were good, but didn't really grab me. My husband has read them all, though. Have you read John Sandford's "Prey" books? They had kind of the same feel to them. I also second the recommendation of Dennis Lehane's series books. I think he's grown beyond them now, his last two non series books were fantastic, and moving away from the genre into something else, this is a writer to watch. James W Hall and Robert Crais are also good writers, rather than just "bestseller" writers.
You might want to read the first half dozen or so of Robert B Parker's "Spenser" books, if you haven't read them already, they had a nice light breeziness to them along with a good story. If you want to read a funny book and stay sort of in the Mystery/Thriller, (as opposed to Mystery/Cosy) genre, try Lawrence Block's "Burglar" books, or Donald E. Westlake's "Dortmunder" series.
I assume, since you like this genre, that you have read Elmore Leonard, Ed McBain, and Sue Grafton? Another series that I always lump with Reacher in my mind is the one about the detective from Boston who talks to his dead wife, but the name escapes me now. You might like Harlen Coben's books, the series ones are easier to jump right into.
This is the type of stuff I like to read, did you guess?