Greetings!

I'm looking for a (free?) VPN service for safer use of public wifi spots and to improve general security, privacy and anonymity at home. This would be for general web use using Linux Mint. I don't currently have a need to VPN home-to-office. Research reveals many choices, I'm hoping some of you gurus can help narrow the list of trustworthy VPN providers. 

Thanks!

(partial list of ones that look interesting but haven't tried yet)

justfreevpn.com: keeps logs
torproject.org: open source
vpnbook.com: claims no logging
freelan.org: open source
logmeinhamachi.com: good reviews
openvpn.net:


-Ken