@cassolotl great work there! I was also surprised by the x-axis on the satisfaction chart, much closer together than I expected.
I may take up your offer of playing with the raw data - my fledgling #rstats skills need practice.... If there's one more in-depth question you'd analyse from your results, what would it be? I feel like checking the statistical significance of some of the small-group results is worth doing, but the last thing I want to do is step on your toes!