i like V.1 personally the white text on V3&4 ruin those for me nice choice of colors and cool effects
good god the text ruins it!!!!! Try a small size basic font out of the way and with a similiar color scheme to the BG
i'd say v1, there are lots of dots that makes it look pixelated (not just on render), cleaning them would give a smoother look, other then that its nice
V1, the text kinda ruins it, try making it a lil smaller and maybe use a cliping mask of a apply image