Hi all, after advice here and on another forum I've recently invested in a range of Yongnuo flash products that work perfectly and seamlessly on the X-T1. I thought I'd share this with you all.
I purchased two of the Yongnuo yn 560 IV - great flash, very similar in size and appearance to the Canon 580 EX II, but with built in wireless communication. Cost US70 each.
To adjust the flash units remotely I purchased the yn 560 TX transmitter. This synced with the flash units instantly and easily, and enables the user to turn individual groups on and off, adjust intensity from 1/128 power to 1/1 in third stops, and alter zoom levels etc. all simply and quickly. Best of all you don't actually need to have the transmitter on camera to do this. I clip it to my belt using a Spider Monkey clip from the Spider Pro holster company. Cost US45
To trigger the flash units I use Yongnuo 605C triggers. These come in a pack of two, meaning I have one transmitter for each camera. Naturally I could use one as a receiver, but to have two small and capable transmitters is perfect for my requirements. Cost US42
Overall I've got a fully capable system scalable up to 6 seperate groups just by adding additional flash units, for a total investment of US227 - less than half the price of a Canon 600EX RT. I can confirm that all pieces worked perfectly on the X-T1, and it was simple to use in manual mode. Finally, the Yongnuo 605 triggers also include a cable which plugs into the 2.5mm remote socket, and enables them to be used as a remote release with up to 100 yards range. Great Bonus!
I'm very happy with the setup, and find it MUCH easier to use than the Canon system.
Fuji X is great for landscape. Don't let all the megapixels guys fool you. I get very acceptable 20x30 prints from my XT-1 - such as this... with 18-55mm @ ISO 200.