For people on a budget and looking for used machine on their local marketplaces I would add the following models
that are supported in widely available acrorip for 1 pass Printing.
Up to13x19 Faster
R3000
R2400
R2000
R2880
R1900 (have to double check and update)
Up to 13x19 slower two channels for white so slower compared to above mentioned.
r1390
r1400
Up to 17inch widht
R3880
P800 (one time chips for the refill cartridges)
If you get one of these make sure you get yoourself at least 2 sets of cartridges. One to clean the system from original ink. Another for new inks.
Up to 24 inches ( have to double check when i go back home)