Since no one else has, I will chime in...
Main question would be "What is your budget for the amp?"
This configuration will allow you to throw more power to the sub:
If you get a 2ohm sub you can wire it 2ohm or 1ohm but your amp will have to be stable at 1ohm
This configuration can only push the sub at 2 ohm, no lower:
If you get a 4ohm sub can be wired at 4ohm or 2ohm.
So, depending on your amp budget will depend on your outcome...
Hope this helps