I used to buy 3rd party replacement ink but I was having problems with the ink. It is a much poorer quality so sure. HP ink is not cheap but for me I decided to spend the additional money and get genuine ink replacements. Buying them at staples has helped me to save money as I use coupons that they often send out and run specials - almost every week. I also get rewards points which is an added incentive. Purchasing the combination package also saves you money and the high yield is obviously cost effective. I have never had a problem with the genuine replacement ink and they work great. In my view using 3rd party replacements is taking a chance as sometimes they worked well and often times they caused me problems.
we us nothing but the ink from Staples and HP. It works for such a long time for us with no problems what so ever! Would recommend purchasing at Staples
The HP 950XL/951 High Yield Black and Standard C/M/Y Color Ink Cartidges produce very vibrant crisp color and seem to last a little longer than other ink cartridges I've used. The multi-pack is a very good deal for the money.