RF 20 is a bit less overall, but I feel like I can tell a difference if only slightly. It ends up with about 1/3 to 1/4 the file size, and that's nice.
I'm probably at the high end of beginner or low end of intermediate and it seems like RF 20 with slow has been very nice for most, which is why I figure going down to 19 will improve a bit more and be 'good enough' for almost anything. My ultimate standard is this: If file size is reduced significantly, and maintains quality to the point where a professional who deals with video every single day would have to sit down, take screenshots and stare at their screen from a couple inches away to really tell the difference, that's a win in my book. Looking to hear your guys' perspectives!! Below the dotted line is me rambling about my results with assorted videos, and why I chose them. The top part of this is sort of leading with my conclusions.
