to be honest, after the first dawn of war, they have made the chaos miles better, at first it was to easy to get the best units but now, its actually more challenging to get them, it takes longer which is good, as for going with the old difiler rush, i dont do that because it isnt very original, i prefer using my infiltrating chaos marines and keeping them in the enamy base for ages before smashing the enamy to pieces, its so much more amusing watching 3 groups of fully armed chaos marines taking out everything in sight