All good - spent this rainy day researching flash - Godox looks unbeatable http://flashhavoc.com/godox-flash-system-overview.
Close to ordering a TT600 basic manual flash, would pay a bit more for a TT685 with TTL but then you have to buy the dedicated Canon/Nikon etc variant and I expect one day to give back the borrowed Nikon and get that Fuji!
Ring flashes and suchlike will have to wait.
Looking forward to hearing more of Alelsandr’s experience, seemingly making a virtue of shadow at varying angle. Would be great to not have to think any more about umbrellas etc.