You would be best to go to Han's online store and look at the photos of the three strains you mention http://discusfishstore.com/. To me the Alenquer best fits your description of a brown with striations about the head and outer body. I have seen a few Stendker Tefe in person at a few of the NADA discus shows and one I liked and the others not so much. Perhaps a drive to see the fish in person is your best bet.
Pat