A:Answer I use the 125 cartridges. I tried the 126 previously, since Epson says it has a higher ink content and lasts longer, but I didn't see that much of a difference in the amount of copies yielded by using the 125 versus the 126. I recall seeing the 125's in a two pack black several years ago but have not seen it as a retail item in a while. I am not sure if Epson also packaged the 126 black in a two pack. As for the tri color 126 pack, I believe I've seen it in Best Buy. You may want to check the Epson website for the packaging options available for the 126 cartridges. If the two pack black 126 is still being produced, you may want to check with Best Buy to see if they stock it (in addition to checking availability of the 126 tri color pack), and if not stocked, see if they can order it for you.