Digital BW, The Print

My impression is that to use the 2160-dpi PiezoBW driver without 
banding, you have to have a printer which can be precisely aligned. I 
think it was said on the PiezoBW list that about five out of every 
six Epsons could be so qualified. And that a new printer which could 
not should be returned in hopes of getting one that could. But I 
assume the lower-dpi Epson driver is less demanding. And that this is 
an argument for printing the MIS FS inks through the Epson driver?

I think I've also heard on this list or the PiezoBW list that the 
PiezoBW drivers run much faster than the Epson drivers do, both on a 
Mac and on WinTel machines, which surely would be an argument for 
printing the MIS FS inks through the PiezoBW driver. Is it true that 
the PiezoBW driver is faster? Enough to matter?

There's a third consideration for me, because I'd like to print 
captions and other text along with the old and small BW family-photo 
prints I need to re-print. Captions I guess I could do in Photoshop, 
especially Photoshop 6. But to have magazine-like integration of 
photos and columns of text, I'd need to move the images to pages 
formatted in something like InDesign and print from it or Acrobat 
without the PiezoBW driver. But is the FS Black ink black enough to 
do the text well? Because I could instead run each side of each sheet 
through the printer twice, once for the text, in blacker ink (and 
color accents) printed with the Epson driver from InDesign or 
AppleWorks, and once for the image, in FS ink. But printed with which 
driver?

I'd be glad for any advice about any this, but I feel most ignorant 
about whether the PiezoBW driver demands more precise alignment and 
about whether the PiezoBW driver is generally thought to be faster.

Thanks.

Sam