Nice tag, really like the colours on this one. Slight bit of depth, but you should go at it a bit with the burn tool to get some shadows out. The text is great.. Id sharpen the focal slightly to bring it out more. The right side of the tag has a good background but is looking a little empty. If it were 30px or so narrower it would look a bit better. Other than that the lighting is good as are the effects. Keep it up
nice sig, only part im not fond of is the filter placed on top section of the sig. seems very sharp on the render and surrounding area. other then that i think the rest just needs to be a bit more sharpened but not too much to keep the focus on your render. good job overall.
I like your first version more, it is more interesting because it does not come around so "clean" if you know what I mean. The lighting just fits that scattering / power effect. I like the colors very much as well. But you maybe should think about the placement a little more. The render tends to be at the very end of the signature where the writing comes in near the middle... The prob with that is, when you look at first at the signature you tend to look directly on the writing and not on the things going on there. Seems like the font is in the very foreground as well which takes away some more focus. Apart from that good job!