Not to be Frag or anything, but... They're all bad. Concentrate on making one sig and improving it over the course of a week, instead of making about 10 a day and posting them all on the forums. It's getting annoying.
Aggree completely with Ioshon. First one is ok, but they all are pritty pointless. If you are just trying to get to grips with new features you haven't used, don't post your findings unless you know they are good.