Although the 2nd image has some areas that need working like the sky where it has dark blue patches and the planes wings have a strong magenta tint to it. Oh I can't leave out the dark areas. But despite that I kind of like them both to be honest
that 1st one reminds me of a graphic for a game or something.
the cart thingy on the left blends into the plane in the distance and makes them look somewhat connected and reduces the overall depth
we are looking down at the ground crew
the layers of equipment on the right side really seem mashed together, had you moved your position a bit you could of created space on that side of the image and again more depth
Also the tonemapping is a bit over cooked and sloppily done.
I can tell this is HDR from a mile away with the halo, over saturation, lack of smoothing, and all that noise in the sky.