We go through about 4 cartridges a month and have considered another machine but this machine gives quality prints and is easy to use. The ink is great and there are no problems.
I purchased a new HP Officejet Pro 8600 printer in Nov 2013. While I am not thrilled with the printer (will not feed through card stock or any glossy type paper) the ink cartridges are easy to install plus the quality of ink on the paper the printer CAN accept is very good.
I have an HP office jet 8600 print/fax/scan/copy/web machine. I find that it isn't as compatible as I expected with my NEW Toshiba lap top which I bought at Staples.(I do love Staples) but the ink for this machine seem to go rapidly. I do not do a lot of color copy more Black but the minute you change a black cartridge then it's magenta then it's the blue then the yellow it never ends until all are replaced. Replacement ink is also very expensive so I always buy two. Also seems to have a mind of its own because I try to save on paper too and print on both sides but it doesn't always work that way.
I have been buying HP Ink for about 20 years - both at my place of employment (I am currently retired) and for home use. In all this time for all the printers that we had at work I have never encountered any problems with the ink or cartridges.
I have a home based business and always rely on HP printers and HP ink cartridges to make it all come together. I have an HP Officejet Pro 8600 which uses HP 950/951 ink cartridges. They last a long time and give plenty of warning when getting low on a certain color. I print color flyers and love the brilliant color the HP ink provides. I also print information for buyer's and seller's and the quality is very professional and I'm proud to include in my presentations. HP Ink is a true business partner and very reliable.
I really like the High Yield cartridges. They last quite a while and the quality is sharp and clear. I also enjoy how easy it is to replace the depleted cartridges...takes only seconds! I have been using HP printers for quite a number of years and these new cartridges are easier than ever to change out. With the combo pack having a high yield black cartridge and standard color cartridges I find they need to be replaced at one time which I find to be very convenient in our small office.
We buy all of our ink for our printers from Staples. We had a company call us and promise their ink would be better and last longer. They said they would send us 3 cartridges for us to try. They did and then immediately billed it to our credit card. The ink didn't print even a fourth as long as the name brand. We learned a very valuable lesson to only buy the name brand and we love shopping at Staples because if it doesn't work they will refund our money. Staples is our store. We love the people that work there and they are always so helpful.