Digital BW, The Print

Thanks everyone for your reponses!  Let's see if I understand this 
correctly.  Qimage supposely does a better job of up and down resizing 
than Photoshop, and it also supposedly does a better job of output 
sharpening.  Even if we assume that's true, I'm not sure that I should 
use it for my files from 4x5 negatives.  First, these are saved in PSB 
format, because they're huge, and I'm not sure that Qimage reads them. 
Second, at 720ppi, my images are 12x15, which fit nicely on 13x19" 
paper. Hence, in order to send 720 ppi to the printer, I don't have to 
do any up or down sizing.  Third, I like the flexibility of using TLR 
sharpening in Photoshop.  Fourth, I"m unclear about using Epson's ABW 
mode on my R2400 with Qimage.  Am I missing something here?