Hi andyb3029,
I belong to a print forum at
Inkjet Printer Forum / Ink Jet Refill Forum
theres lots of good info there.
Your 1400 is a dye based printer, correct? If you're going to use 3rd party inks you have the option of using pigment inks. If you choose to do this you'll have to profile your printer-paper-ink.
Since you've already been using CIS you may already be doing that?
I bought some pigment ink just recently from
http://home.eol.ca/~mikling/
This ink is by Image Specialists and the guy will do custom profiles for you up to like ~750 patches.