I follow the btrfs development because I'd love to have at least the features of ZFS on Linux. However I would not dare (yet) to use it as a replacement for my current home fileserver (which owns ALL my data).
Does btrfs provide cifs export like ZFS ?
Edit:
from the btrfs wiki https://btrfs.wiki.kernel.org/index.php/FAQ#Is_btrfs_stable.... :
Is btrfs stable? Short answer: No, it's still considered experimental.
You get the online compression (meaning you use less space and read and write faster on mechanical storage because you have less to read / write at a time), you get the snapshots, you get subvolumes, checksums, etc.