I definitely liked 7, 9 and 17 most. Number 18 also had an interesting feel with the bumpers that look scavenged. The idea of a tank with different scavenged looking parts is interesting to me at least.
I'd also recommend searching for futuristic looking current military vehicles like for example the Patria AMV AMOS
( Image from wikipedia here https://fi.wikipedia.org/wiki/Tiedosto:AMOS_Patria_AMV_Lippujuhlan_päivä_2014_1.JPG )
