Gosh, where to start.
A few years ago, before I started reviewing (and therefore exposing myself to a wide variety of good, great, and mediocre crime writers), I always said that Mark Billingham, James Lee Burke, and Michael Connelly were my top-of-the-tree 'go to' authors.
There were others that I thought were good, but a little below those three.
Those three are still at the top of the tree for me, but the branches are heavier with many others, including some that are right up there with them too...
If you like MB, then you should definitely read Michael Connelly, Jack Kerley, Michael Robotham, Paul Cleave, John Burdett, Val McDermid, Stuart MacBride, Craig Russell etc - they are similar to MB in terms of having that great but hard to achieve balance of great characters, good plot and storytelling, good setting and good dialogue (some other authors veer strongly in some of those directions while overlooking others)...
Read James Lee Burke too - he's a different type of writer to MB (more lyrical, more setting-focused, more social/environmental issues and literary allusions etc), but equally excellent in his own way.