There should be a good quality between the R2400 to the 3880. If you want a much better quality printer, the Epson 4900 will the best within the 17" models.
3880 does have the better printhead and larger inks. So, if you sell your prints, it will be more cost effective. R2400 has 18ml tanks, 3880 has 80ml and the 4900 has 200ml.
Plus, the R2400 has a roll attachment where the 3880 doesn't, but the 4900 does. So, there are the pros and cons between the 2 17" models from the smaller printers. Both Epson 3880 and 4900 have nice rebates this month.
Chris W
Atlex.com