Never heard of Donald James but I will look into him as soon as I get done with Cinnamon Kiss by Walter Mosley. Any suggestion on where to start?
Sandford is not like Leonard at all so I hope you dont go in thinking that. He has a couple of different types of books. He has the detective who hunts down psychos and then he has some hacker novels. The detective ones are the prey series. I enjoy all of his books but he has written more of the Prey series than the Kidd series. I would suggest starting with "The Devils Code"
Stephen Hunter has a long time line. He has stories set in the Spanish Civil war and up in the present day. He has a Arkansas cop and then latter books about that cops son who becomes a military sniper. Lots to chose from there. I think his best work is either "Pale Horse Coming" or maybe "Time to Hunt"
You cant go wrong with any of those books.