A year ago, I almost bought an Epson 3880. Last week, I did buy an Epson printer, but opted for the 3000 instead of the 3880. Here is are a few reasons:
(1) the 3880 will print 17×22 paper, which is one size larger than the 3000
(2) the 3000 will feed both sheet paper and rolls
(3) the 3000 has built-in wi-fi
(4) the 3000 costs $300 less than the 3880 (after mail-in rebate)
(5) both the 3000 and 3880 use medium-size ink cartridges
specifically, 80ml volume (compared to 59ml for the R2000)
Between the years 2000 – 2010, Epson has been the standard bearer among semi-pro inkjet printers. Canon has since taken some of that market share from Epson. The Canon Pixma Pro-10 competes directly with the Epson 3000 and is comparably priced. The Canon may print a bit faster and includes 50 sheets of paper with the printer (worth $45).
Epson also offers larger printers (for 17″ wide and 24″ wide paper); Canon does not.
The real cost of a printer is not the printer itself, but the cost printing. The per-sheet cost is primarily a combination of paper and ink. For more info regarding per-sheet cost:
http://www.redrivercatalog.com/cost-of-inkjet-printing.html
(The cost of paper can vary widely as there are many choices today for paper.)
UPDATE:
One week after selecting/buying this printer, I stumbled upon this recent review of the R3000:
http://thewirecutter.com/reviews/best-photo-inkjet-printer/