the second is nice I dont like the lines that overtake the render in the first one and the third one i dont like the cut off face... its decent work though
Lol.. your posts are always so DETAILED G35. I love it! Every one! But if you want a real critique, i agree with afflicted on the first and third sig. The first sig's colors are great, and the flow would be fine as long as the lines framed the render instead of overlapping it. And the third one's missing a focus, as the face isn't there and there's no other point of interest, really.
3rd is best tbh has the best compo, with the first one id get id of the render and try to make an abstract one because it looks like a very cool style