What I disliked the most was that, because they were too large, and I wanted to return them, but couldn't because it was sent UPS, and, because I live in an apartment complex, had no way of getting a return label.  I live alone, and the return policy is that an adult has to be present to receive the label.  And I don't have a car, so couldn't go to a UPS center to do it.
So I had to suck up the cost of the size 8s and buy size 7s.  The panties themselves are wonderful.