i think the one by DingleDorf is aiight, you need to blur the edges and blend the render of tech into the background, maybe do a color overlay over the entire image a do a layer clip over tech to keep his stock color. try doing a motion blur, or using a smudge tool with a duplicated tech to blend it.
for the original ones i do agree that less is more. the one with the light is a good idea, but it looks like you lowered the opacity on tech, when you really should just do the lighting over him.
I do my art in Photoshop CS2, imageready, and 3d design in Cinema4D