I have both the POC VPD 2.0 jacket and the Demon d3o jacket v2 (with the added chest piece).
I like the soft pads that harden on impact to disperse the force from a hit over a hard shell. I like the fact that they mould to your body and move with you.
Both pieces are excellent IMO.
I got the POC jacket first and find the protection to be excellent.
However, the spine protector pad is relatively thick, making the jacket a bit heavy.
If you want excellent protection, I recommend this.
If, like me, you sometimes prefer less weight (not bulk!), the Demon jacket is a very good alternative. The spine pad is not quite so heavy.