ok...
1st one : love it... i think u blended and brushed it out really well.. and text is appropriate for the sig.

2nd one: not likin' so much. way too dark man..renders are way difficult to see, and the contrast is jus way off..no offense..it still looks like u put alotta workin in2 it..so ill give ya that :P

i really like that first one though, im never good with robot renders.. lol and thats the first sig w/ one that ive ever seen that i liked...