For calibrating my workflow, I profile all of my displays, as well as my printers, with a Gretag-Macbeth i1, a $2000+ device (FWIW, the newer and much cheaper X-Rite Colormunki works just about as well, and is easier to use.).
Is the i1 D2 any good? I definitely can't afford $2000+, but $200 is alright for a good color profile