Compatible cartridges are usually "refurbished" or even just "Refilled".
Using a compatible cartridge may void your HP warranty.

Knowing that, if you are going to use compatibles, make sure that you are using a vendor who will replace faulty cartridges for when (not if, but when) you have an issue.

Often, OPC Drums, wipers, and counter chips are not replaced on "compatible" cartridges; they can lead to poor print quality, or even dropping in a cartridge only to be told that it is already used.

I guess the best advice if you wish to use compatibles is "use at your own risk."

That being said, getting "X" cartridges instead of "A" cartridges (if they are available) will usually last you much longer.

Just my $.02

"What the captain doesn't realize is that we've secretly replaced his Dilithium Crystals with new Folger's Crystals."

--Greg

What gbaughma said is spot on. I use refurb/compatible carts all the time with LD Products. They have great customer service and will send you a replacement quickly if you have a bad cart as well as mail you a return label. You can do eBay but you get what you pay for on there.

Learning - A never ending quest for knowledge usually attained by being thrown in a situation and told to fix it NOW.