Digital BW, The Print

Hi all!
I've been a member of this list for a couple of years now and have 
read alot about and watched the progression of digital B&W with a lot 
of interest. I've learned quite abit from this group and have no 
intention of leaving it. I've done a bit of printing, and had a lot 
of problems solved by reading the info supplied by all who have been 
generously posted reviews, tips, workflows, etc. This forum is the 
best. Now I'd like to ask for advice from the group. I upgraded my 
pc, moved up to photoshop 7. I still have my 1200(dedicated)to B&W 
with a cis and MIS hextones. I am about to purchase more ink and am 
trying to decide which way to go. I've been reading the comments 
about the ultratones(MIS) and have also been reading about the new 
piezotone inks(and software). I must admit, the piezotone and new 
software make sound PnP. I realize that I will need to replace the 
carts and flush the tubing, which ever inkset I choose. I would hope 
to hear from members that have experienced these inks, along with 
comments about MIS black inks(eboni & photo black) and piezotones 3 
blacks.
Thanks for your input!