Although a 5 star rating might be a bit premature as I've only printed a few items so far. However, 2 pairs of combo cartridges cost less than 1 set of HP inks. They are a perfect match for the HP Deskjet 2050. Hopefully I'll update my review later and give potential buyers an estimate of the ink usage and durability. For your health :)
MFP inkjet HP Ink Tank 315, color, A4, black
23 Review
Cool Toner 055H Compatible Toner Cartridge Replacement for Canon: High-Quality Ink for Your Printer (Black Cyan Magenta Yellow, with Chip, 4-Pack)
12 Review
HP LaserJet 1102/1130/1132/1210 Compatible Cartridge Cactus CS-CE285AS
22 Review
Cartridge NV Print MLT-D111L for Samsung, black
13 Review