I have some issues with two of my yellow toners. I order multiple of these at a time, so they sit on the shelf before I use them. Therefore, they are out of warranty. The ones that work properly work great! However, I have two that don't work well. One of them leaves streaks of yellow every time I print, and the other one says that the shipping lock is in place. If those issues could be resolved, I would certainly raise my ranking of the product.