I think zfs is very popular with the honeserver crowd, but its not worth the hassle for desktop use. If you want something more fancy than ext4 there is btrfs which lets you take snapshots and checksums the data to detect corruption
ZFS is brilliant and all, as long as you only add disks, too bad if you want to rearrange your disks, you have to buy a new set of disks and move the data.
Btrfs is much better for home use, combine your old 3, 4 and 8tb disks into one, buy a new 16tb disk you add it and remove the 3tb disk.