Cool song
I think most of the work that needs doing is probably on the drums - the guitars and vocals sound great - I think I prefer the guitars in the second version.
The kick in the first version was way too clicky, but you fixed that in the subsequent versions, but there's something about the newer snare that I can't put my finger on. Maybe it's just that it sounds too fake or something, in which case it's a matter of taste rather than engineering :p
Of course, I should point out that I'm no professional, I'm just going by what I hear through crappy pc speakers at the moment...