Review on Valuetoner Canon 137 9435B001AA Compatible Toner Cartridge for ImageClass D570, MF236n, MF247dw, LBP151dw, MF227dw, MF229dw, MF216n, MF232W, MF217w, LBP151dw, MF249dw - Black (4-Pack) by Alfredo Nosrac

Great product. The packaging is well done to minimize waste, the cartridges are individually wrapped, and there's even an FAQ document covering cartridge issues and installation. They have a non-canon warning when you turn it on, but it's easy to clear. The print quality is good and is in no way inferior to the standard Coming cartridges. And that's the most important part. Not sure if the capacity is as advertised but I print heavy pages so I would expect to get 1500-1800 compared to the 2100 they advertise and that's fine. Excellent purchase. I will buy again if I need more.