Genuine HP ink out performs any of the third party brands lasts longer and creates a much better image when printing. I always use HP 24lb color lock paper and the combination is outstanding everyone who receives letters using this combination comments on its great apearance.
I have been using HP printer cartridges for years. Easy to install, easy to align, long lasting, even predictable color, until it actually runs out, and plenty of warning to get a new one.