One of the big revelations for me is how Qimage works so easily in tandem with Lightroom. Learning Qimage for just a few days now, I seem to have effortlessly slipped into this routine: import pics into LR; apply adjustments in Develop Mode as normal; sent images to Qimage via alternative external editor and print from there, allowing Qimage to apply the final smart sharpening. No need to worry about print sizes and individual sharpening etc. It's fast, easy and painless, as Dark Penquin points out above - and it opens up the whole array of Qimage print facilities at the click of a mouse.
For those of us not happy with LR sharpening (and nobody is) this workflow is one way to go until LR gets its sharpening act together. Also, if you don't use or like LR, you can drag images from Bridge (in CS3 anyway) straight into the Qimage print windows so long as they are not RAW.This way, you edit a bunch of pics in Photoshop, save them to a folder as usual without final sharpening, open the folder in Bridge and drag them into Qimage for final auto sharpening and printing.
Just some intitial impressions from a Qimage beginner. Some practical tips from seasoned veterans would be good.