The first one I really like a lot, but the plain sky in the second one doesn't seem to add anything to the shot, in fact for me it takes away from it - although when I usually comment like this about unnecessary skies in abstract type images, I usually get told that I couldn't be more wrong and the sky is a necessary counterpoint to the rest of the image or something, but hey that's how I see the world through my viewfinder when I am composing images like this I suppose and we all need to be different don't we

Dave