I am now 100% cycles and really enjoying it. I've not used Octane since version 2 came out. I tell a lie, I did fire it up the other day and I'd completely forgotten how to use it

How is the cycles node system massively superior to Octane's? Can you be more specific? I don't know anything about nodes, but wantThe node system used in cycles is massively superior to Octane. As for noise / speed I am not sure about speed but I don't have any issues with noise.
Octane needs more samples as far as I'm aware. More samples doesn't mean it's less superior. Considering it only took it 18 minutes in comparison to Cycles 44 you can probably increase the samples to 3000 or 4000. The noise difference isn't that much, it only seems to be where the bounced light that hits the armpits get the noisiest. Also, there should be some settings that solve Caustics faster in Octane that you can use. I have been using Vray recently so I can't really remember any more. It should be somewhere in this forum and in the manual.Samples was 2000, time take by Cycles was 44:42 and Octane was 18.22.