which video streaming has the highest video quality?

Using Firfox Downloadhelper Add-on for one particular Youtube movie, I found many video streams available.

Please tell me which one of these video streaming has the highest video quality?
What is the typical data file size per one minute of video play?

[360p] Full Movie).flv
[Medium] Full Movie).mp4
[HQ5] Full Movie).flv
[HQ36] Full Movie).3gp
[Mobile] Full Movie).3gp
[HQ134] Full Movie).mp4
[HQ133] Full Movie).mp4
[HQ160] Full Movie).mp4
[HQ139] Full Movie).mp4
[HQ141] Full Movie).mp4

Thank you