http://thenewproxies.com/vpn-speed-and-security/

Which VPN service is the quickest? There are also several variables which make a VPN look fast: Latency -- the time between receiving a piece of data and requesting it Download Speed -- e.g. when downloading a large file, how many Mbps (megabits per second) are you getting? Upload Speed -- e.g. when uploading a big file, how many Mbps (megabits per second) are you getting?