What I try and capture with my photos is how I feel when I initially see a shot. Very often different composition, lighting, dof, pov, etc. can enhance that feel. I will often take a shot as I initially find it and then play with capturing variations as I think of what attracts me to the subject in the first place. So shoot for emotion but use as much technique as possible to heighten the feeling.
I agree with others that 'proper' technique can lessen the feel of a shot in some occasions.