Before I cast my vote I must evaluate both sigs. I will begin by evaluating them against each other: they are both horrible. No really, neither one is good at all. Both sigs are average at best and neither have much effort in them leaving nothing for the viewer to enjoy. I will now have to evaluate these two sigs as a lesser of two evils situation.
Metalburn
Your sig seems to be lacking in any consistant effort in your working. It looks like you rushed to simply put anything together. The sig leaves nothing of any lasting value, and the layers show it. It can be basically evaluated to a gradient background, random special effects, and your name in curved font. This sig is not very good at all, however it does hold a, if extrordinarily flawed, flow.
GaZeebo
This sig in continuing with the current theme of this match is "horrible". The background is distracting, and the font seems awkwardly added just so you could say "HEY MY NAMES ON THIS TOO!" The inclusion of two utterly random pictures of Bender may appeal to the "LOL BENDER IS IN FUTURAMA AND FUNNY" guys, but from an art perspective it is just random. So in the end we have a not very good font, an epileptic randomness of a background, and two strangely transparent Bender images.
In the end I've had to find a single thing that would make me WANT to like these sigs, because as a judge I must be decisiveness. That thing is that Metalburns at least holds a remote flow to it. The sig may be an eyesore to look at but unlike GaZeebo's utter randomness it at least qualifies for a sig in a "sig competition". Metal, you get my vote because you are not AS bad as the other, but the sig is still truly awful.
Metalburn: 1
GaZeebo: 2