Bryce is best for natural landscapes and has been superseded by Vue in technology and image quality. I'd use 3D Studio Max or Lightwave or even the completely free, rather tricky to learn, but technically exceptional program Blender for this kind of artificial, glossy image. This image works fine though Bryce doesn't deal properly with the luminescent coloured lines within the spheres - you need a program with a 'rendering engine' that can do 'radiosity' to make such images look startlingly more visceral. With 'radiosity', neon textures will light up their surroundings and otherwise flat, dark areas become gently lit by light reflected off nearby objects (if there are any). Sorry, 'use something else' is not exactly helpful
Thanks for your comments! I really do appreciate them. You are absolutely correct. Bryce makes modelling fairly easy but there are not many lighting options and definitely no way to do GI...Hey the download was free!
Be aware that there is a free but initially limited version of Vue 7 which is basic but can be expanded by purchasing modules, often reasonably cheaply. Not that I'm promoting them - they'll have to give me a major cash incentive before I start doing that!
I love free software! Blender is definitely worth looking into. I never got the hang of it.