DC
Congrats on your 1280, it is a real bargain right now because of
newer printers on the market. A work-horse of a printer. Have
had mine for several years and it has never given a serious problem.
Agree with the votes for Epson PGP, it is my absolute favourite,
and is also the paper which garners the most accolades for display
prints.
Epson's semi-gloss premium is also nice.
I used to experiement with cheaper papers but the colour is
different and the feel is not so impressive.
Epson's matte is nice under glass, less glare and can be more vivid
and rich in appearance.
Definitely
http://www.atlex.com for paper and ink. Atlex people can be
a tad abrupt on the phone, with minimal hand-holding

but their
items are shipped immediately and the prices cannot be bested.
Don't buy ink carts at Compusa or Best Buy, the prices will keep you
awake at night
Save yourself wasted paper by always using the "print preview"
box, so you see the preview on-screen before printing.
Do searches here for the 1280, there will be many threads
Good Luck,
Keith