Digital BW, The Print

I am trying to decide between Piezo inks or MIS Quadtone inks 
for my Epson 3000.  As these cartridges are large, and 
expensive, I was wondering if anyone has some thoughts on 
which of these two inksets I should go with.  The Piezos run 
about $260 for the set.  With the MIS's I can get preloaded 
cartridges for about $180, and a lot less if I go the 'fill your own' 
route.  Are people seeing a real difference between these.  I will 
probably be using the Piezo driver.  I seem to be getting sharper 
results on my test images with the Piezo driver over Woolf's 
curves and workflow.  Thanks for any recommendations, 
suggestions, etc.  Also, any paper recommendations would be 
great since I'm looking at investing a few hundred dollars in a 
supply and I am having trouble choosing one.