Basically Christine, is it for hobby use only ie you don't intend to sell prints or for a business use. For hobbyists, Epson 1400 or Canon Pro9000Mk11. Both capable of producing excellent prints. To keep costs down, use OCP ink. Here in the UK we can buy ready filled cartridges for the 1400 at around £20 a set from Internet-ink.co.uk and these also are filled with more ink compared to the original Epson ones. For Canon again OCP ink is recommended and to refill the original cartridges using the German refill method - a technique fully described over on Nifty-Stuff.com inkjet forum.
If you intend to sell prints then you really want prints which will have archival qualities and that comes with using pigment inks as opposed to dye based - the Epson1400 and Canon Pro9000 are both dye based.
Many contributors to this forum will recommend buying the Epson Pro3880 as opposed to the Epson R2880 simply because of the volume of ink supplied in the 3880 makes it a bit of a bargain compared to the 2880 and it has the added benefit of allowing you to print up to A2,
Hope this helps, there are lots of posts on this subject so happy searching.
John Archer
Edinburgh