I voted for no. 1 because in my opinion it is still the best looking with the best module of the mudman series, though i would rather chose another colour scheme.
I owned no. 2 also but never could really warm up with it and i think it has the weakest module of the series.
no. 3 was, is and will always be one of the ugliest g-shock's in my opinion, though the module isn't bad at all. but i would definitely go with the (much better looking) GW-M850 instead.