I’ve had some mixed results with a couple of suppliers. Anyone got a good recommendation?
No, I switched to a color laser a couple of years ago because i had such mixed experiences with inkjet printers.
But for other people who might be following this thread, a lot of newer printer cartridges, say in the last 2-3 years, now have chips that will prevent them from working even if you refill them. I think it’s still cheaper than a new cartridge, but it adds to the cost and in some cases, I don’t think you can either buy the chips or easily replace/reprogram them. I’ll go back to lurking now.
I have only bought ink for years. In fact the Dollar Tree sold some refill ink for a short time and I bought all they had. It was all dye based ink and quite universal. The older printers did not have chips to lock the cart up and prevent refilling. I guess I’d buy a chip resetter if I had a current printer. I had good luck with Canons using separate tanks. I left the carts in the printer and added ink in-place with a hole drilled in the top and plugged with rubber.
Currently I am using old HP 932C printers that feature #45 and #78 tri-color carts. The #45 uses pigment based black and has a bladder that holds a whopping 45g of ink. The #78 is sponge filled and can be difficult to get started after filling. I recently made a jig that allows me to pull ink through the heads at the bottom and bleed all the air.
Refilling works for me. There is a learning curve. It pays to become an expert on a certain cart. It also help if that cart is a common on that has lots of empties floating about.
Check out inksupply.com
They have many refill options and cheap 3rd party options as well.
I have used them for year from large format printing to small desktop printers.
Their instructions are great you may learn alot just by exploring their site.
They are my ink source. They deliver quickly and reliably too.
Because one man’s factual answer is another’s opinion, this one is better suited to IMHO rather than GQ.
samclem, Moderator
That’s what my all-in-one inkjet printer does - I tried re-filling the cartridges, and they registered as empty after that. Bastards.
You can easily override that, you just need to know how for your printer, do some research on line. My printer does the same thing exactly, but I just over ride it.
My husband remans inkjet cartridges, out of our home. He uses manufacturers ink (expensive!), has a zillion printers, and different techniques for each different cartridge. He can even get around the chip thing, clever boy. So anyone saying ‘just do it this way’ has, very likely taught themselves one kind of cartridge and you may find it just doesn’t work for yours.
Needless to say I print numerous full page photos, for my bulletin board whenever the whim strikes me. I never even give it a thought.
Off to research on line! 
Well, it sounds like my cartridges have a chip that needs to be re-set when they’re re-filled. I haven’t been able to find out how to do that; I think my next step is asking the re-filling guys if they know how to do that.
It might be off topic to post it here, but I think it would be fair game to post you printer model number, or preferably the cartridge model in GQ. I’m sure you know that but just in case you’re shy . . . 
dzero nailed it. Speak up, tell me your printer and cartridge number, pm if you want.
Sure - my printer is an HP Deskjet All-In-One, model F4235. There is a separate black cartridge and a tri-colour cartridge; both are numbered 60.
Go into the print utility and make your printer print the test page. Check the printer manual there may also be a test page you can initiate from the printer itself, you could also try that.
Just keep pressing OK, no matter what message it gives you. He thinks that would work, but doesn’t do many of those kind, (he has mostly business accounts).
He did say, if you can’t get that to work, the easiest thing to do is to try and swap out your empty cartridge with a friend, (with the same cartridge), refill that, and you should be fine. Your printer won’t recognize it apparently.
Thinking about it, I have used nothing but remanned cartridges for years, but I’d bet never the same exact cartridge twice. The ones I use are in circulation with the ones he gets in, and recycles. Something I never really thought about before.
My Canon MP250 is very impolite about flashing out of ink lights. It still prints using my refilled cartridges. I have had mixed luck, but the difference between ink and cartridges is so great, you can throw away a few disasters. I guess I could put black tape over the lights.
You should probably try the same thing, when you put in new remanned cartridges, print a test page or inkjet test first, it may convince your printer the things not empty after all.