The first looks best to me. I think you could have done better with a graduated filter as there is potential there for a nice foreground and it’s been lost.
The second one made me think, “Why’s he photographed a bloke having a pee?”. I can see that you’ve deliberately gone for a very centralised crop, but I think the person needs to be bigger or smaller – bigger to be more visible, or smaller to look more lonely.
The third one doesn’t grab me at all. Too burned out in the sky, too little to look at in the foreground. You’ll get a hundred like this each time you go out.
The first shot is the pick of the bunch for me also, great colour and composition! I think the 3rd was taken maybe 20 minutes too soon, but has also good potential!