Digital BW, The Print

Hey everyone,

I read Clayton's article and I am interested in trying BO printing.  I currently have an HP 
Photosmart 7350, and while it prints color in 2400 dpi, when told to use only the black 
cartridge switches to 1200dpi.  The few test prints I made left me dissappointed because I 
thought the dots would be much less visible than they were.  I have not been able to find 
out if the Epson R200 does the same (switch to 1200dpi)...I'm basically trying to figure out 
whether or not it's worth buying a R200 over what I currently have or waiting until I can 
get something better.  

Thanks!  Brian