Thanks and apologies for not being clearer. When I said 'Epson driver' I meant something other than QTR, and not ABW. I use Mirage for colour printing, and haven't been near the Epson driver for years. I didn't know that it could do anything with tones. I would do my toning in PS and then print with Mirage.
My question is how well does a colour driver do against a dedicated B&W one. I'm assuming that it must be pretty good as Imageprint is supposed to be very good on B&W.