The Doritos locos tacos are, according to the Taco Bell website, "a taco supreme made with premium seasoned beef, crispy lettuce, diced juicy red ripe tomatoes, real cheddar cheese and topped with cool reduced-fat sour cream, in a shell made from nacho cheese Doritos chips." Although it didn't look quite like the taco in the posters, it did come with everything as advertised.
I really liked this taco. The Doritos shell added a nice cheesy flavor to the beef and sour cream, and a different type of cheesy flavor than the shredded "real" cheddar cheese. I love crunchy tacos because of the contrasting texture with the fillings inside. A also liked it and thought the Doritos shell was a little thinner than the regular shell and more like a Doritos chip. We would definitely get this again. Yum!