I've just spent over an hour trying to unclog my Epson 2200! And it isnt clean yet. Media Street bulk system simply sucks! I'm not married to bulk systems, though the idea is a good one.
Any alternatives to this system or Epson carts?
I'm not arguing with your regrettable luck with your ink system, but I do feel I have to say this:
I have an Epson 880 AND an Epson 1160 running four-ink MediaStreet CIS systems. They've both been performing flawlessly since 2000, printing daily. I calculate that I've saved thousands in ink costs.
As always, YMMV.