How do you like the XS708T? Compared to the Ubiquiti?Yes 10G copper all resolved now and older units are covered by warranty. I am connecting mine to a different switch XS708T, and also to my Xeon-D boards.
You can run the controller in a VM or on a Pi, or you can buy the Cloudkey.
Warranty is short but if it's a design defect that affects a large number of units you can probably swing a replacement device if you ask very nicely.
Also, tried finding CPU HW specs for the US-16-XG. Any info on that data?