Even if I don't get this particular board, I'll end up buying one in the nearish future. I was looking at this board because I am putting together an unRAID server to learn more about virtual machines (currently running on an old I7 system with half the available threads that I paid just under twice as much as a Ryzen build years ago). Ryzen CPU's a freakin' amazing for this...16 fast threads to share amongst your VMs. This board also has 10 sata ports...so plenty of ports to add drives for my VMs! The only thing more I'd want out of a Ryzen board are four full size x16 slots (hardware accelerated VMs require a video card per 3d accelerated VM)...and the ability to run them in 16x mode. My ultimate plan to test out is whether I can make one computer and share it across the house with small android boxes for clients at each of the desks.
Also running a FreeNAS server for the last 1.5 years using an ASRock Rack 8 core Avoton board. Not sure about their general consumer support, but their server grade support was GREAT (never, ever let go of William Lee...that dude is the shit!) I'd absolutely buy from these guys again.