I wouldn't recommend using one. P2P VPNs are great for people to commit crimes with, so unless every time your VPN is off, you want to be solving reCAPTCHAs all day, and not be able to make a purchase online, I would avoid it.

P2P VPNs don't offer much in the way of privacy, decentralization is only better in theory here. For unblocking services, many normal VPNs can do this fine as well.