alot of people enjoyed, i bought arma 2 and the req ex-pack to be able to play dayz but not having anyone to play with, and not knowing really how arma 2 control system was i din't enjoy it and only logged maybe a hour at the most on it.
I would wait and see how the dayz standalone is going to turn out, or even wait to see if a legit dayz comes to arma 3, which i have and love compared to arma 2.