Tried War Z - Liked it BUT
So I've never played Day Z so perhaps this is why my expectations were low and I played War Z for the first time today with a friend and i have to say I enjoyed it. No issues with the game at all. To me it seems like the type of game that you simply can't play alone, if you do you won't enjoy it.
My only problem is that taking damage and healing is clearly leaning too far in the pay to win area for me. Too little healing loot for a PvP game and its only going to create a huge divide over well equipt and geared players in the long run so for me I would want to see healing happen over time (say 24 hours) back to full health if you have no bandages or food or money.
The play to win aspect of the game really is the biggest draw back for War Z. The game itself I am happy with, I set my expectations aside and enjoyed it.