The difference in the Bryce versions are boxed you get the boxed version shipped to you, Hi Bandwidth you download with a fast connection and Lo Bandwidth you download with a slow connection. So there has only been ONE upgrade of the actual product. Don't confuse folks with type of purchase as opposed to actual upgrade. I have both Bryce and Vue. I started with Vue 3 and now own Vue Inifinite, awesome program. Just picked up Bryce 5.5 because it was inexpensive to upgrade from 5 now. Vue is a higher end program so if you can afford it you might want to get it instead. I would suggest going through the Vue tutorials with the demo, look through the galleries as well and see if it will suit your needs. Marque