Epson R220 works fine--as long as you're doing one CD at a time. Ink can be expensive if you insist on designs that apply large areas of color to the CD; on the other hand, you only need to replace the color cartridge that's been exhausted, so if you use a lot of, say, blue you don't have to waste the remaining red and yellow ink when you replace the cartridge.

I've found that aftermarket ink cartridges work fine, and are a helluva lot cheaper. On t'other hand, you have to buy discs that will permit ink-jet printing, which cost a bit more than the usual non-printable ones. And your printed discs won't be water-resistant, which may be a problem if you tend to spill coffee on them.