I sidegraded from 6 Inf to Complete because a) it was much cheaper and b) the feature set contains pretty much everything I need (now). However, this may well change in the future. You only have to look back at Vue 6 to see how huge the differences can be and that can come from just one feature. Ecosystems in 6 Infinite and Pro Studio were two very different beasts, with the ability to paint them being a real deal breaker. If the situation should again arise, where the Infinite line has something that is vastly superior to the Artist line, then yes, I would see the need to upgrade but as things currently stand, I would be unable to do so.