in that case go for 20. 17 has clipped the edge. While the whole subject does not need to be in the frame, it must look like it was a purposful choice. 17 looks accidental.
Look out for things growing out of the subject, the road sign in 20 for example. It detracts the eye. Kill it in photoshop.
overall, nice shoot. The heavy chain was nice but the gate behind the car was too messy and spoilt the composition. Try it again from a different angle perhaps.
Good luck in the compo