Do any of you guys have expierence using these? Last time I replaced the cartridges in my Epson 760 I had a hell of a time getting it to print right again, I think I did the head cleaning and nozzle alignment like 4 or 5 times before it cleared up. The company I order all my ink from (cause I can get them for $2.95 for black and $4.95 for color) sells cleaning cartridges for just a bit more. I was just wondering if these things are worth it? My printer is working fine now, but if it gets bad again and these work it might be worth it.