Nr 4 or the last one in my opinion.
they all look pretty shat, but would have to be the last one
I like the third one, pretty epic.
I'm with birch, the third one, I'm a bit minimalistic though <object class="emojione" data="https://resources.enjin.com/1489581540/themes/core/images/emojione/svg/1f600.svg?0" type="image/svg+xml" standby=":d">:d</object>