Both, to me interesting signatures. Chrisco's is action-packed, and disco's is pretty unique. Also for someone new it is great.
here is some detailed critic:
Colours - 8/10 | The colors go great with the render, and are also very nice for my taste.
Blending - 9/10 | You blended it very well, I have to say it is almost perfect, could use a bit more work.
Render - 9/10 | Goes great with the background, and is a great focal point for the signature.
Background - 9/10 | Wouldn't be to great without the render and the blending.
I would give chrisco's sig a 9/10.
Colours: 5/10 - Hey, they are not bad, but I do not like them overall.
Blending: 0/0 - No blending really.
Render: 8/10 - I will classify this as the c4d. It is pretty nice, I saw the orig. in your gallery. Nice work changing it's colors.
Background: 8/10 - Probably the best part of the sig. I like it, but I am not fond of the grid used in it.
I would give disco's sig a 7/10.
Therefore chrisco gets my vote.
Chrisco - 1
Disco - 1