Quoted from ForceFlow:Well, those look better than what ended up on the final artwork.
I think the second looks less realistic than the translite Murray... it looks like it is for a Saturday morning kid's animated Ghostbusters cartoon. The first Murray looks like it would work on a more adult oriented Ghostbusters for the SWIM network, and translite Murray looks like yet another rendition. Give ZY credit for his ability to render a single character in so many different ways... the purpose of comic art is for creativity.