I have just got my hands on calibre and am in awestruck over it's ability to convert .pdf files into readable Epub files. My only gripe was no matter what I do, I can't get it to sync correctly with my iphone, but now on to the real topic.Has anyone messed with calibre or any other ebook reader long enough to know what settings should be used to make the books fit as much text on screen for the 7 inch screen Eken m001? I was thinking maybe there was a mobi or kindle setting that would be close enough to get the text to appear correctly on the unit without making the font size bigger. I do not have an Eken myself to play with this but I bought one for my wife for her birthday and would like to do as much research as possible into this matter before converting .pdf books to epub.