I'm really keen to give ReFS+SS a go, but I keep hearing horror stories of abysmal parity-spaces performance, which can only be explained by poor coding and testing.
Even if ZFS has better performance, it's never going to have full support, and it wasn't written for the NT kernel IO model, so I'm dubious about it ever working well...
Sincerely, someone who had to port kernel level code from Linux to NT.
I quickly moved away my data and never used ReFS since.
Which is almost more interesting than all the good stuff that comes with zfs (volume management, disk management, software raid-like functionality, encryption, snapshots, send/receive).
Its the first time we truly have a half-modern filesystem with safe write support and sane performance across many different os's. Even if just made dual booting freebsd and Linux this would be a fmgreat win imnho.
If the choice is between zfs and fat32...
IIRC, one of the issues involves the layout of extended attributes. FreeBSD keeps to Solaris layout (which is essentially the same in concept to NTFS' one), while Linux for speeding up certain stuff (and because Linux can't use native xattrs to full extent anyway, due to using Irix API which is limited to PAGESIZE xattrs) has an optional feature to pack xattrs more densely.