at the moment I'm using the last of my generic ink as fast as I can so I can play with my new ciss. Though I haven't had any big problems with the ink so far.
@tkxboxer, I'm printing covers so they usually aren't graytone. When I print just black text there are no problems, probably because I print black ink only.
My covers may only be viewed on well calibrated screens and printed on well calibrated printers.