These go from most to least recent.
I like first and last the most. Have some rep (first!)
That last one is pretty darn awesome. I love the layout, color scheme, and the little hints of elevation you've got in there. All around cool.
What Diamond said. The third one has definitely some potential.
The first and the last are my favorites as well.
I agree with the others, some very interesting styles going on in the first and third. Looking forward to seeing more from you :)
Nice work. great colors on the third.