How in the world did Mateui's logo lose to pshchoskulls? Because IMO, Mateui's looks so much cooler *_*
Mateui's is just text with a ring around one of the letters, not to mention it's not very easy on the eyes. There's just too many layer effects on the text making it look 'overcooked' - especially the white outer glow.
Psychoskull's is the best to me, although Foget would have been a better choice, as mentioned already. The only thing I'd say that needs to be added is a slightly darker shade on the GW text to make it stand out more. There's only two colors right now, but I think adding one slightly darker shade very conservatively around the bottom would make it look 3-d. Overall, it's excellent. The colors, use of line weight, etc. It's iconic like someone said as well; if you were to convert it to just one color so that it could be used in shirt designs, it would work and still be easily recognizable. Some of the other designs are simply not vector-friendly and wouldn't convert well.
Aztec's is also very good, but I personally would have drawn the letters by hand to match the hand-drawn look of the character; the letters seem too clean-cut to me as it is. It's not a glaring flaw or anything, just something I would have done to make it look imperfect and not like a downloaded font.