There are a lot of nice submission to choose from, so it will be an hard task for the voters.
From my point of view, I like a lot Caladbolg and Atyroki. The latter may look like Medicham, but I find them awesome anyway.
I'd vote for cartoons' artwork if only for the animation^^ Really, the way it knocked out Blissey and Zapdos was amazing lol. However, I find it a bit too... simple, somehow. Im not saying that it is too simple to be "legit", Stratagem was not different in that regard, but my preference still goes to Caladbolg and Atyroki.
Sadly, even if I always appreciated both the artworks and the sprites of Wyverii, I don't like that much his submission. I find it to be... maybe too realistic. I know there's not a defined style for these artworks, but still I cant help having a negative feeling looking at that art.
DJD is nice, too, and probably, if Calad and Aty had not posted what they had actually posted, it would have my vote.
For the other artworks, there are some nice ones, but I didnt find anyone of them enoughly impressive to make me mention them now. Anyway, good job to all^^ I can grant you I would not be able to do anything better than any artwork posted here.