I don't know about any great "free services" nor have I ever heard of PacketiX.... (Something to look into, thanks)
I think that because you're concerned about your identity and anonymity, and aren't trying to use it for illegal activity, you might want to pay the couple of bucks for a good vpn service. However, a lot of the services restrict your server access i.e. amount of changes and location. So, would you want to be switching around, or just one or two options?
Right now I can suggest Perfect privacy and Strongvpn.... both are paid services though.....