Sig 2, though it might be better if the balloons were moved about 40 pixels to the right.

- 55555

I like Sig 3. Though, I agree that Sig 2 would look better if the balloons were moved to a different position,

Three. It has some nice colours.

Three.

I'll agree with 55555 about 2 and add that it is more iconic of Up, but 3 is overall better.

Well, I went with number three. Thanks for the input. =)

Now to find a good avatar to match.