Pros:
The Stringzone is always quick to post the strings, and it's hard to find them cheaper elsewhere, particularly at anywhere as reputable as they are.
Cons:
On this occasion, the G string unfortunately arrived damaged. This wasn’t the fault of Stringzone, and given the way the strings are packaged, I can understand that it’s not something they’re able to check before dispatch. Because it was a very subtle damage, I didn't notice it at first.
They responded promptly when I contacted them and clearly explained their replacement policy, which I found entirely reasonable.
One very minor observation: although it wasn’t their fault, a brief apology would have made the customer service experience feel even better. It would have helped offset the frustration of waiting a week for the string to settle in, only to have to start the process again.