Number 1 works best for me; nicely framed and sharp, if a little bit front focused.
Do you mind if I ask what lens and f-stop you were using? I don't want to provide useless or harsh comment, but 2 and 3 have lost the eyes-in-focus, which brings down the otherwise nice shots. Do you let the 5D focus, or do you use the centre-point?
This loss of critical sharpness might be because - your lens is front-focusing a little [though unlikely] or you're using a very shallow aperture [and most commonly when you recompose holding focus lock.]
Hope I haven't stirred up trouble! All the best