anonymity will be really good
VPNs don't make you anonymous. Your VPN provider will still be able to see your true IP and all your traffic, and there is no way to be 100% sure that your VPN provider isn't keeping logs. If you have paid for your VPN with a traceable form of money (bitcoins which have been linked to your identity or any type of fiat), then you could be complete de-anonymized and have all your internet activity linked to your real identity.
VPNs are great for a variety of reasons, and I use one a lot of the time, but if you want to be anonymous then you need to be looking at Tor.
It cuts both ways, users who use TOR may be suspected of illegal activities and attract the interest of security agencies. From where I sit,TOR traffic should be hidden from DIP via relevant proxies, arguably Shadowsocks is the best of them.