Digital BW, The Print

For purely B&W printing using 3rd party B&W inks, is there any  
advantage to the Epson 1800 over the 1400?

Both have 1.5 picolitre jets, and both will handle 13" paper. The  
1800 has eight heads, while the 1400 has six, but this should not be  
an issue with B&W.

Will QTR work with the 1400?  Aside from that, is there any reason I  
should not save the $150-$200 and get the 1400?

[ I'm thinking specifically of Tom's carbon-only recommendations for  
the 800/1800. ]

Myron