Digital BW, The Print

The higher dpi will be good, however if you find a paper that can 
help hide the dots, then you might be OK. Canvas is always good for 
this. Checking the specs, you probably should spen too much time 
looking for a paper that will make it look good, and think of a way 
to buy one of the 2880x1440 printers. If you want black only, you 
might also think about the R800/1800 with the smaller droplet size, 
this should give improved resolution, but you would want to test it 
on all the papers you might use before shelling out the money.