I prefer the artwork of Fui Ni, so I would be inclined to vote for that...
However, the Dear J truck looks more like a solid unit. The similar artwork fit together better and the black vibe gives it a cool look...
On the other hand, keeping in mind the function of the truck (pimping Tomochin), the Fui Ni truck probably does the better job. The pictures are more appealing and the white background makes it look like a ball of light, which will grab the bystanders's eyes much faster.
So yeah, Fui Ni truck ftw.