We are in the process of getting Premium Access for our TC1. I know there have been previous threads regarding white lines or black lines around the subject being keyed. We have experienced that and have found that it is basically a song and dance to try to find the right formula of keying the green and lighting the subject in order to reduce, not get rid of the line, but reduce the outside edge. What are the main differences that are noticeable with users who have experienced Ultra compared to Pro. Thanks!