I have it's predecessor (N36L if you want to google for prices)
Yes, it's very nice; but it's not that quiet.
I have 4 x 2Tb in raid1, but might switch to btrfs sometime; I'm a little leery of both zfs and btrfs at the moment. In Fedora because it's most similar to what I use at work (RedHat), not really any other reason.