I just recently upgraded from PD 16 -> 17 Ultra.
I really like the title and chroma key enchancements, as well as the usability improvements to the timeline.
One thing that really is bothering me though is the youtube video that displays and autoplays when I start producing a movie.
This is highly annoying. I do not want my CPU and Bandwidth being spent streaming any youtube video while I'm trying to render my project.
I cannot find any setting to turn this off, but I definitely don't want it.