I got the Premium Wii U ZombiU console bundle I wanted the game so much, safe to say I wasn't disappointed in it, very mixed feeling on the game but I'm with the people who really enjoyed it, I'd say rent it first, then decide what side of the fence to go to.
Or instead of renting, there's a demo on the eShop that gives a pretty good idea what game is all about. It certainly helped make my decision.