Something else I forgot to say was the difference between the S5II/S9 video and the S1RII is how clean/nicer the latter is.
Working with all 3 on the same timeline, especially with lower light stuff, it’s very clear which is which because the S5II/S9 footage whilst not muddy, seems muddy when compared with that coming from the S1RII.
This is partly why I have moved the S9 into a very limited secondary role where along with the S5II, they will be responsible for pretty much just 3 scenarios resulting in 3 pieces of footage, albeit in the case of the S5II, that means full length wedding ceremony and full length speeches.
Anyone using these cameras together will probably confirm the same difference.