Ever though about using an HP indigo press?

The main current advantage Igen's have over indigo's is rip power, this is however being severly looked into and give a year and they'll be up there, I do beleive that indigo's have a better range of jobs that can be put through it's presses (series 2) rather than an igen (using the black % text as an example).

We have found a couple things that help to print sharper blacks on the Igen...

1)Making sure the text is coming over as K only and not a build. InDesign generally does this automatically, PDFs however have problems with this. We have to manually change the blacks to 0% Grey in PDFs (using Pitstop Pro) to truly get K only blacks to RIP.

2) Try printing business cards with Halftone settings at 200 DPI. On the DocuSP this is under the Image Quality Tab in the Halftone section. On the Creo I believe it is know as 200 Lpi setting, but I forget where you change that in the job properties.