I was really impressed with @wendell 's video of the Thecus N5810PRO. I've been after a decent NAS for some time, so after looking at couple of other reviews I bought one! Interestingly, one of those reviews had a link to the Thecus OS, so if you fancy giving it a test drive yourself: http://www.thecus.com/sp_livedemo.php
Those who are after a smaller NAS can testdrive the Synology disk station manager as well: https://www.synology.com/en-us/dsm/live_demo?lang=enu
Maybe it's useful as a comparison.