Which composite is more real?

I did a photo composition of two photos. One original taken in a studio (the model) and one I got from the Graphicstock (background). I did some retouching and ...
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I did a photo composition of two photos. One original taken in a studio (the model) and one I got from the Graphicstock (background). I did some retouching and filtering. The I made 3 options. From the option 1 to 3 I added some detail filters Color look-up adjustment layer to give a more 3-dimensional form. The model detached from the bakgrounf what is good, but unveil amore the composite. The option 3 was obtained geting more light on left side of the model, to match the sun direction of the sun in the background.
So. my idea was to do a photo composite that could not be noted like that (as the photo was really only one). However the 3-dimension should be presented.
Based on the above, which one was the 3 options should be considered the best? Pleased to hear.
Kind regards,
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