For me, it's the B&W. There is huge potential for bringing out even more of the "edge" in the texture, by using more Clarity, for example. The colour image is beautiful and has potential too, but the glare from the wet roof I find distracting in the colour version as well as the road in the bottom right, which doesn't seem as "road-like" in the B&W version.
In either case, it would be nice to see just a little more room around the "shack" (croft house? cottage?), particularly on the left.