Are liquid ink refills for HP printer cartridges any good?

I've been looking on eBay at the cost of refilling my HP 364 cartridges and they are considerably cheaper than buying new cartridges. Therefore, I'm concerned about the quality difference. I do print photos regularly, so was wondering if the ink refills are comparable in quality to new cartridges?
Update: RE: compatible cartridges at the same price

I can't find compatible catridges in the same price range as ink refills, even on eBay. The best price I can find for the compatible set of cartridges is around £30, whereas I can get the ink refill kit for £13
6 answers 6