I voted "A", the 3d effect is very cool! Has a much cleaner look. B is also OK but the font doesn't match the effects used on this, maybe it will look a bit better with a different font. Really nothing else to say about these, good job!
this is slightly irrelevant but it's 3-3 on the poll at the moment, but to answer your question, I like them both so I can't pick
I think their both kinda dull at the moment.. Not choosing any, the first one is OK, but the box makes it kindof meh, and the second one doesn't look that good either, throwing all the effects you got in there doesn't make it look any better, instead it makes it cause eyesores.
I think if you are going with one it should be A, but I think it should be modified to have a nice material on it and with a transparent background so it will look better.