UpSpin: If I could get these results I would be happy. Do you mind sharing your recipe? What tools and what steps do you use? I have a PRS 350 and I do a mish mash of cropping (using OSX Preview) on some PDF's, Calibre convert to epub on others and just built in reflow on others.
Nothing gives me completely satisfying results like a normal epub. I am thinking about getting a tablet since most of my reading is PDF.