#1 looks like a classic "face palm", and I prefer to see at least some of the face. #2 has more light on the face #3 is my preferred. More of the face is concealed in shadow, and you seem to be more contemplative.
Interesting... I get different emotions in each of them. #1 seems to be saying he's just got some really bad news. #2 tells me he's had a long and stressful day. #3 gives me the impression he's got a bad hangover.
I like 2 the best. 1 seems bit staged for some reason. #2 and #3 are very similar so at 1st I couldn't tell why I was getting different reaction to them..but it's the hand in #2. It seems more "pressed" to the face which gives it that added tension.