Historically, we have had poor results when using generic inks. Typically the ink nozzels clog because we infrequently do any printing. Using factory branded inks we have never had this problem with extended use. As a result, we spend about 2/3 the cost of a brand new printer to purchase the branded inks. Thankfully, we do not need to print too often so staying with the branded inks makes more sense for us to extend the life of the printer.
While I'm sure this ink would have pleased Gutenburg, the price would have made him take a hammer to our inkjet and return to his press. Keep an eye on the price per milliter between the XL and standard cartridges. Currently the XL is priced at .81¢ per ml, and the standard is .79¢ per ml, so at these rates it is less expensive to purchase the standard cartridge. To calculate the price per ml, simply divided the total cost by the ml per cartridge, 15 ml for standard, and 22 ml for XL.