I was one of the Kickstarter backers, so I've had the device for about a month. I'm generally quite pleased, but I do disagree with the author of the review about the ease of use of OpenMediaVault.
Even as an experienced software engineer, and having set up and used a different NAS before, I still spent a couple hours hunting for documentation, tutorials, and trial and error before successfully connecting my Ubuntu box and Rasp Pi running Volumio to the NAS.
I think Argon should have done more in terms of providing a "roadmap" in terms of links to documentation and tutorials to help new users get the software set up.