I'll rate the 1st one. The colors are nice and you have an unique way of blending the render within the sig. Overall it looks really good, 7/10 for it.
7/10 edit: the top one didnt load last time, i see it now and wow, 9/10, love the whole diagonal thing, its a nice style and overall colour still 7 for the bottom one
5/10 loads of open space ateach side, i think if u cut it in half and mvoed the render just ofset in the middle it would be very nice