The fact that the blk. ink is XL it does last longer & we thank-you for that but the other cart.'s should be XL along with the blk. one. We would also like to see 2 cart's of blk ink in 1 pkg. available as well.
The HP 950XL combo ink pack are good quality ink cartridges. I was very pleased when I saw the awesome deal in the Staples advertisement. Ink cartridges are a little pricey but when Staples gives a % OFF deal it's a great time to buy. Love my HP printer and the combo pack deals.