Just the stock Lightwave renderer. I have started doing more and more adjustment in Photoshop after the render is completed, though, which is a big help. I also credit Final Gather radiosity for giving a little extra pop, and saving my renders as high dynamic range .exr files so I have the most control possible in Photoshop.
Here it is with another lighting setup. No high res version so far, since I still haven't taken care of my new website problem, because I am lazy. Personally, I like the original version more.