When I first purchased my HP OfficeJet Pro 8600 printer I was that the ink cartridges were very long lasting. Frankly I was skeptical but now I can honestly say that these cartridges are long lasting. I purchased the printer in early June 2014 and I did not have to change my first cartridge for five months. I do lots of general printing and plenty of graphic printing which is ink heavy and I was impressed with the longevity of these cartridges. They are a bit pricey I'll admit but I believe I get my money's worth.
I ran of out ink at the worst time. I had to print invoices for our business or we don't get paid. I learned long ago not to buy refurbished cartridges that may or may not work.I get our ink from Staples. Pop the ink cartridges in and I'm up and running in 2 minutes. YES!
I find the HP950XL 951 Color ink cartride combo pack a convienent way to pickup and replenish my printer needs. The black ink XL cartridge seems to last a lot longer then the regular cartridge which is a plus. I am not totally satisfied with the color ink cartridges as it seems they do not last long especially if printing items in color...thus I find my self many times printing items in gray tone. The printer that uses the cartridge is easy to replace provides great status on cartridge levels. The printer cost is very inexpensive but the company sure makes up for it in ink cost...but I keep buying them and Staples does provide good deals on the purchase cost from time to time..just got to catch them when they are hot.
My printer HP Officejet Pro 8600 uses this combo ink pack for its printing functions. The printing quality is superb and I use it to print all the time anything that I need to print. The color is vibrant and pretty accurate as a result I print photos birthday cards invitation cards and business cards not only for my self but my family's picture too! I also print many business documents that require printing and storage and also personal ones. So both color as well as black ink high quantity is a definite requirement. It therefore I give it only a four stars because in this quantity area it is lacking.