Very fast delivery. The packaging was fine. After installation, this toner was recognized by my printer. This is the third set of non-OEM cartridges that I have tested in my printer. I have a Brother MFC-L3770CDW printer. I bought this printer because my work from home color printer was missing from the office. I will be printing MOST of my prints in black and white, so an extra toner cartridge would come in handy! I mainly use it for spreadsheets, manuals with colored text/graphics, etc. I pulled two color printer test pages from a google search (people, landscapes, color charts, black and white photos, light/dark photos, etc.) e Me have tested OEM Brother toner, EZ Ink toner, Aboit toner and another toner that I have purchased before. My wife and I were the judges. Brother toner was much cleaner/clearer and the color was natural. The EZ ink set came second out of four pages. Details were (very) slightly blurred, not as sharp as the OEM printers. IF I am printing photos/art and need ultimate detail and precision, I would choose Brother OEM toner cartridges. What do we use the printer for? , the set is more than enough. I would buy them again. You can pay over $260 for Brother OEM toners or +/- $70 for them AND get an extra black cartridge! Time will tell, but so far so good!