The POS algorithm is exactly that a Sound.
The PPC POS algorithm is still broken from last December. The "fixes" implemented since have not been publicly discussed nor has it been proven to actually be a viable POS algorithm.
But you are right, the SOUND of POS system is nice...it just isn't a reality yet.
It's a work in progress from what I understand, one day it will all be resolved.
Buy your PPC before then.
I suspect you have a secret stash of PPC anyway.