
I use these cartridges for my two main printers at work (a small company of 30 people). We print about 20,000 pages a month and I save a ton using regular toner compared to the official brand. V4ink is my most trusted generic brand - I've had unusable cartridges with a few other names, but on the rare occasion that something is wrong with one of them, they replace the faulty one with no problem.