Sue Grafton is one of my favorites. Earlene Fowler writes quilting mysteries. They can be a bit saccahrin but if you like the Joanna Brady series, you'll probably like them. Tess Gerritsen writes the books that the "Rizzoli and Isles" series were based on and I enjoy hers also. Edna Buchanan writes some good Miami based books and Alafair Burke (daughter of James Lee Burke) is turning out to be an excellent writer. Janet Evanovich writes the Stephanie Plum series which is always good for light reading and entertainment. I just can't help but laugh at her characters. Monica Ferris writes needlepoint mysteries and while they are really mind boggling, they are good entertainment and have enough twists and turns to keep you interested.
I could go on, but I don't want to take up too much space with my preferences.