Digital BW, The Print

Julian,
So far these inks are like the Epson inks not the piezoBW inks.  I 
rarely get a bad nozzle cheak and if I do, it's fixed with one or two 
head cleanings.  My experience with Full Spectrum is very limited but 
I have also used MIS VM-hex and their original quads and all have 
been clog free.
Hap