Digital BW, The Print

I am thinking of jumping into inkjet printing, and am having trouble 
deciding between Piezo and MIS methods.  I understand that 
Piezography is supposed to have a driver which makes a substantial 
difference in printing.  Is this so?  I saw this link:
http://www.piezography.com/piezographyBW-comp-mis.html
but, don't know if it is a fair comparison.

Can anyone give me advice?  I have set aside about $1400 for an 
inkjet printing system, and want to make sure I get the most bang for 
my buck!