AC, really awesome work. Not sure who it is though, but I like it. Masson, I like it too but its a bit more plain than AC's. I see a little resemblence though. SPZ, its really really good, but as I said, I don't count it fully as what I consider a micro so I prefer the other two in a micro battle. I vote AC here.
AC: Overall, everything looks great. The shading is quite clean which i like, and i can assume the accesories are hard to get right, so good job on that. And by accesories i mean the black things... Masson: Nice Mosby, i definately see the resemblance. The eyes seem to be looking kinda down, instead of forward. The outfit is well done. SPZ: I thought pixel art wasn't counted as a micro. It's original though. The shading could be better. Vote goes to AC, i like it more than the other two.