hmm DayZ has a lot of bugs....H1Z1 is a ripoff imo.
Why is H1z1 a ripoff? The game will be free to play when it has a full release, as far as game-play, it is like DayZ with pluses like controls. Unless you want to bug test and be heavily involved in the making of H1Z1, i would wait on H1Z1.
DayZ is like the arma mod, but with less content and more bugs atm.