I just went through the same thing with both an Epson Stylus C82 and C86. Then I stumbled upon a discussion on CNET about Epson print head issues, and someone had posted a link to a website that addresses all sorts of printing issues, with entire sections dedicated to Epson printers. It's called www.maxpatchink.com. They explain that, yes, Epson inkjet printers can print amazingly fine details, but the downside is that this requires tiny printhead nozzle openings... which, unfortunately, leads to clogs. They recommend all sorts of tips, like printing one color page from your computer every day to keep the ink flowing, making sure you turn your printer off every night from the printer's power button (so that it will disengage the cartridges from the printheads), not from a power strip (which will cause the cartridges to continue to leak ink and coagulate in the printheads), and they even offer workarounds to get your Epson to keep printing after it registers that you're out of ink (which in actuality means you still have 10-15% ink left in the cartridge -- thanks a lot, Epson). But most importantly, they sell a special cleaning kit that unclogs the printheads. I just used it on both my Epson Stylus inkjets and it did the trick -- I got my ink back! But I'll stop blabbing now and let you see for yourself -- you MUST check out this site before you give up completely on your Epson.
This is the actual link to their Epson dedicated page:
http://www.maxpatchink.com/epson-tips.shtml
Hope this helps, and FYI, their customer service staff are very helpful.
Dual 2.3 GHz Power Mac G5 Mac OS X (10.4.2) Epson Stylus C82 and C86