Upload & Sell: On
I usually avoid commenting on landscape images because it is out of my area of expertise. So, while I can't offer critical analysis, I'll stick with my preferences (and general awe).
All beauties and a testimony to your technical skill and processing ability.
I can't comment on the over-saturation/realistic nature of the images, since I have never seen these locations (except a very quick drive thru the Painted Dessert mid-day....hardly doing it justice.
In each the colors are beautiful with great skies. Detail, contrast look great and all have a sharp, 3D look to them seen with the top edges against those skies.
I prefer the comp in 1 and 3. 1st appears over-saturated and 3rd more neutral/realistic. While I gravitate towards the look of 3, some drama is lost and I wonder about something in between for final (printed) version. Nothing wrong with 2. It presents a different comp, a different "story" of the butte in its larger setting with even more of the interesting circular/circuitous paths in the landscape foreground that add interest.