My fave mystery/crime authors, by far, are Michael Connelly and James Lee Burke. I also like Sara Paretsky, Kathy Reichs, Patricia Cornwell and Sue Grafton, though the latter 2 are losing their touch a bit. I enjoy the Scandinavian writers a lot, too. There are more, but only so much space to list them!
What I don’t enjoy are some of the genre writers who have first published in the last decade. The plotting is repititious and the books not that well written. I had 3 in my DNF pile last week alone. Editors: we rely on you to keep your authors on top of their game!