I'm only giving this a 4 because of a 1'x1' ripple that took almost two weeks to flatten out on the edge of the rug. Not sure if it was due to how it was rolled up in packaging. 

I bought the 9'6"x13, so it could have been due to weight of the rug in the packaging. 

Either way, it corrected itself and looks fantastic. Used the smaller version in the same building for an entry way rug. My clients love them both!