I like the first very much because of the repetition of roughness in clouds, wave, and rockbed. For maximum drama, which the image surely allows, I would suggest using more of the tonal range for maximum contrast (not local contrast adjustment).
As for colordifferences, they appear natural to me although perhaps there is a problem with UV light here. Even so, with some additional saturation you may still retain the subtle colors but get a slightly more "romantic painterly" look.