Those look sweet. Great flow and great depth. The problem I see and upsets my eyes is the text. Take it out and this signature would be 10X better imo.
v1 is the best by far, the second one is too blurry at the top right and it looks a but empty without that c4d there and the third one doesn't suit without any color. But v1 is rly nice, like fusic said, depth is okay colors are hawt.