first is the best...but its still not amazing. there all a bit empty, and u seem to basically be doing the same thing over and over with different renders. also, do yourself a favor and keep the text simple...by simply using a default font, you can help to not draw away from the focal. Keep trying and read up on some tutorials
EDIT:
Just to add another little tip...shrink up the width on your sigs, especially since you don't seem to be filling up all that extra space your putting in