No3 for me with perhaps a tad more contrast?
I prefer the composition of No 3 but it does look a little soft. I think it could be improved by adjusting the levels and then sharpening it up a bit. A nice shot of a beautiful place though.
Do not take this the wrong way. I think you should have made more of the old hay turner. Getting closer, different angles etc. Of the three though no2 has it for me as you are left wondering what the wheels are connected too.