I had some luck with the Vertex 2, but it would blank every fifteen minutes or so when using 4k HDR. Without HDR it was solid. But the HDR makes a huge difference, so I gave up and bought a UHD722 and it's been great.
Thats a bit wierd. Ive been looking at the avforums boards and havent seen that mentioned before. A lot of people have problems with using the wrong cables which is pretty standard with 4K kit. They seem to update the firmware quite regularly so maybe its been addressed. Not working with HDR would make it a non starter for most people.
I’m probably still gonna try this before the UHD722, just given the price difference and support that hdfury have.
Cheers
Greg