Feel free to edit if you feel you can improve the levels on these... I am ultra tired so struggled to see straight enough to do a decent job, plus am new to the pp stuff.
Hrmmm... #1 doesn't do too much for me; the combination of the pose and strong highlights I think.
2. Much nicer, but the expression isn't quite right.
3. I really like this one, my only suggestion would be to lighten dark area behind his head just a little bit.
Just my $00.02 worth - your milage may vary.
~John