We like design #19, but wondering if you could change the "V" to the blue color, the "fuzion" to the blue color, and try the spiral design in a black with the white gradient in the middle like you have? Also, could you try some alternatives to the spiral shape, to make it resemble more of a spark like in the middle of this: (
http://visualparadox.com/wallpapers/spark.htm) with sharp edges or points?