Just tore through a few of Jonathan Mayberry's books. Not all are zombie specific, but for sure, book 1 of his Joe Ledger series "Patient Zero" [and the backstory prequel "Countdown"] is an exceptionally entertaining and well-written take on the zombie genre IMO.
Take:
1 part evil Bond super-villain billionaire
1 part uber-capable top secret military organization and shadow government agency
1 part killing-machine lead protagonist in possession of both a conscience and brains
1 part smoking hot British love interest who also happens to kick major ass
Blend, stir and enjoy
