I purchase HP printers ( have 1 color, 10 black & white) for work and toner cartridges. We are supposed to purchase compatible toner cartridges because they are cheaper and I've bought from different companies. The black toner cartridges do fine in the black & white printer but the black and color toner cartridges to not hold up. I was having to replace them even though they were 1/2 to 3/4 full. Now I only purchase HP for the color printer and no longer have problems. I will only use HP toner in my home printer too. I purchase my toner cartridges thru Best Buy, Staples or Office Depot and only when they are on sale or offer specials. Check online before shopping because you can get free shipping, get a percentage off, or buy so many get one 1/2 off. Costco also has good prices. Sign up for each stores card to get rebates, points, etc on purchases. If you turn in your toner or print cartridges to Office Depot they will give you a $3 credit for each one. They then will send you a gift card a few times a year.