These are all Authors who in my opinion are damn good and yank you right down into their characters. I have read all these and would not recommend them if they were not all damn good!

David Forysth, Sovereign Spirit Series and others.

Best Tales of the Apocalypse

Paul Mannering, Tankbread 1 and 2

Iain McKinnon, Demise of the Living

Stephen A. North, Dead Tide and Dead Tide Rising

Jessica Meigs, The Becoming series

John Hennessy, At The End

Lee Argus, The Road to Nowhere

Ian Woodhead

Shawn Chesser

John Ramsey Miller

Mark Tufo