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Very cool shots here, that is not an easy location to get a good shot at. I think you did really good on both, and thanks for keeping the original up, it makes it so much nicer to be able to see the difference.
Now... since you are in a cropping mood... I actually would crop more off the sky in #1, your original is a great shot I think, but if you crop and leave just that bottom row of clouds and go to what would be a pano format with that shot, it does two things. First, there is something cool about views like that in a pano version... and two, it forces the eye to focus more on the ground layer than the sky. Right now in #1, and I am not saying it's a bad thing, but the eye doesn't necessarily know whether to look at the cool sky, or the cool ground...
Okay, so #2 is my favorite, I like that bit of foreground on the left with the brush. Since cropping is the order of the day... I wonder if on this one you went to a 4:5 format crop and lost the right side. For me, I really love the sun rays through the clouds in this, they are super cool looking, but I think the two spots of dark sky towards the upper right kind of distract from it. I would lose at least the blue sky right at the corner, which would help you lose that dark black shadow in the lower right corner... Just a thought...