I like the top one better, the sepia doesn't really flow with it. I think that it needs some color isolation to really improve it. Give the triangle a nice color and add a few of those more stringy glow brushes.
The central areas of the triangle need to be lightened up further - currently it all just blends into this dark mass of lines. Somewhat similar to what you've done with your name at the bottom, the triangles need highlights as bright as that.
Also, moar contrast!
Lacking a lot of contrast and lighting in general. Not a fan of the globule things in the background, they are random and skew the flow too much imo. They could also do with more detail, smaller triangles and perhaps a few picture elements added.