Personally, I like 2 & 3.  I think #1 is the worst of the group.  It is
bland and boring.  #7 isn't visible/rendered/accessible.  #9 is interesting,
may be combine it with 2 or 3 with a different and smaller TUX.  However, I've
really never been that impressed with TUX.

     Someone complained about SGI's 3D cube logo.  That was THE BEST logo.  It
was a LOT better than the Homer Simpson one that followed and I kind of find
#1 leaning in that direction.  May be that is why I don't like #1, too
simplistic and low tech.

     Just my personal views.