Digital BW, The Print

Is there really a difference between the Piezography BW plug in 
(version 5, I did not buy the v6 update, which appears not be 
possible since the modification of the inkjetmall site) and the Epson 
one? 

I currently use an Epson 1160 and piezo inks (mostly through the 
Piezography BW plugin but any time with microbanding in dark areas)
and EAM papers and I'm going to switch to MIS FS Neutral. 

JMHumbert