Here is what I found best about 7.3:
1. Sound quality. For tests using my voice I found it to be much superior. I carried out two tests one using my Macbook's built in microphone and the other with a blue snowball. Results: Built in microphones - good enough to be acceptable. Blue Snowball - truly excellent.
2. The media panel: Being able to flick through the move thumbnails, with and indicator of where I was, was extremely helpful and likely to provide great time savings.
3. All the other fixes appear to be great.
1. ScreenFlow was always excellent and it is now putting a considerable distance, in terms of overall quality in all dimensions between itself and competitors. I would say it has the brand quality of Apple in terms of design, ease of use and quality of result.
Thank you ScreenFlow and you are on my list of recommended essential tools for teachers who aspire to transform education.