I like the scrolling one, and I'll be very happy to use them as a sig for the challenge.
I usually draw them / rip them myself. Gjost used to draw them for us but he's not around so often these days.
To me though the lights in the scrollers don't look like lights. They are kind of dull.
Look at the way P_O has made his, they look more LED like.
Maybe you could brighten them up a little and make them scroll faster?
Possibly make it more densely packed too i.e pack more led's into the same space so that the image can scroll more smoothly and the letters can look more detailed?