No real issues. They are heavy duty cups that have the added bonus of stacking inside one another. The gradient markings are correct, but they stop really short of the top of the cup... It just seems to me that the markings could have continued for another half cup or so as there is plenty of blank space. Don't get me wrong... It's a great set and I'm very satisfied with it.
Rating:
[5 of 5 Stars!]