I use proXPN. It's good for random trolling and what have you, but I'm not confident enough to do anything serious with it.
I use free vpn..they are ok but you have to remember they reset themselves every 12 hours. Pro shield is bs because it is easily detected as a proxy on facebook etc, I like free vpn because it just looks like a hosted sharing device so to facebook and youtube it looks like you are on your college campus in the computer lab basically.