samba - share zpool or mountpoint?

[blazingice]

I have a second zpool called data that is mounted at /usr/home/USERNAME/data. I am setting Samba in order to share it with a few Windows machines using the same username.

I can share it in two different ways in smb.conf:

1. zpool path = data
2. mountpoint path = /usr/home/USERNAME/data

Is there a preferable way to do this? What is the benefit of sharing a whole pool or filesystem compared to sharing only the mountpoint?

Thanks