I rarely postwork other than my name. For a while I was a Bryce purist and even used Bryce lattice to put my name in there. Now I use postwork to fix small blemishes from time to time if the contest rules allow it. I've seen some fantastic postwork. As far as I'm concerned, postwork isn't a detriment to the final image, its a compliment. If someone looks at an image and says "hey, that's pretty neat" then so be it. If they look and the jaw drops open followed by stunned silence for a while, well, that's better. So who cares if you use Rhino, EIU, Photoshop, Poser, Bryce, Vue, etc, as long as the final image does two things. 1 - satisfies the artist and 2 - inspires the viewer.