I like the eyes on the new one. He looks more methodical than crazy.
See, I'm completely the opposite. The eyes on the first release look like they do on the show. The second...he looks like he's cross eyed and just had a flash bulb go off in his face.
The second one is also looking down with a manic expression. Kinda like he realized that he isn't wearing underwear.
I have the original, and Humanite is still one of my favorite figures in the line.