Different mood. Gotta say this one is my fav of the two. It's the simplicity of this without the colour distracting from the essence... ya know? Having said that; if you hadn't posted this b/w version the previous would still be a holy shit for stinkies. (which is actually a very high compliment)
I like the mood this creates: such a rich range of tones, and an ethereal waterscape. Well composed. I couldn't think of anything I would change, if I had to fortune to have captured this great photo.