My 2c worth:
I still like the original, but with a frilled necked lizard instead of the gecko(?).
The second one looks too "busy".
Lose the kangaroo on the third one and that would be my pick.
Having said that, as long as I can stick one on my CT and it keeps my beer cold, I'm happy
Will we be voting on the final desi?gn
Oh, FWIW, in the right context it should be "round"