DrShakalu
Thank you for your kind words.
Keep in mind another potentially useful item: k2pdfopt (
http://www.willus.com/k2pdfopt).
Output is similar to pdflrf but (IMHO) usable only for two-three column articles. Those articles look very good, particularly IEEE articles. k2pdfopt automatically cuts them between columns and create single column output. As to other common one-column books, k2pdfopt cannot create fully justified output (lines are centered at best) and resulting text looks ugly.
Sure, as tomsem said, after graphic conversion we lose many good properties of standard text pdf but at least we acquire good reading material