They're all good - but since you're asking for critique here's my 2pth - remember this is minor detailed critique, not intended to be a slating:
1. Lovely colours & sharpeness. Is the horizon off are is it just the hills? I think the foreground lead-in lines could be improved by moving to one side a little, and it's a little unbalanced, somehow the slightly dull foreground rock and position of the sun don't quite gel.
2. Best of the set IMO, love the mist and sky and the shapes really work as a whole. Is the horizon off again? I'd remove the bright area at bottom right, too.
3. Beautifully exposed but doesn't quite hang together for me. Even with the telephoto compression the foreground, rock, mist and sky seem a bit separate.
4. Not a big fan - presumably this was taken quite wide angle? The bright leaves at the bottom distract from the focal point under the bridge. I wonder whether cropping and/or a b&w conversion would improve it?
5. The waterfall has the same problem - too much foreground, not enough space above the waterfall - and having the focal point dead centre doesn't quite work. I think the degree of motion blur is about right, though. However the rocks and trees near the waterfall look a bit out of focus.
6. B&W waterfall - this b&w treatment doesn't add anything to the original, it just emphasises the busyness without drawing attention to the structure of the image.