WHICH AF MODE IS BEST FOR LIVE VIEW?
Having experimented with each of these AF modes, I can tell you that the Quick AF mode is well worth the short interruption that occurs when focusing on your subject. I tried shooting everything from macro subjects to portraits and the Quick AF mode was much faster and more accurate than either of the Live AF modes (regular/face detection).
Those of you who plan to tether the 60D to your computer and shoot remotely, I still highly recommend the Quick AF mode…mostly due to it’s accuracy over Live AF mode. Happy shooting!