I would go through 56 XL Ink Cartridges at a three to one minimum. I purchased HP Officejet Pro 8600 a little over a year ago with HP 950XL/HP 951 High Yield Black and Standard Color Ink Cartridges (C2P01FN#140) 4/Pack by HP. I'm nearing my second set and believe me when they say you will get at least two and one third times the sheets of printing. I also print on HP Color inkjet paper. Buying cheap paper the fibers will only end up clogging your printer heads and lessening the results. A bit pricy but as I said above do the math. Buy one set or three sets of color ink to do what these do. Highly recommend these Ink Cartridges if your into Medium to Heavy Printing.
I have used this product for about 2 years. It is excellent for everyday printing--personal or professional. I especially enjoy the rebates when recycling the cartridges.
These ink tanks keep printing even when they say they are out of ink. I have also had them refilled in the past. So easy and saves a ton of money. I stopped doing that when I get $4 back for each recycled HP ink tank and 40% off coupon on ink purchase over 75. at time of purchase Being they are $100 this made it like getting them for $46. Staples you rock!!