Originally Posted by DaleDe
Actually it is worse than this. PDF's are made for full size pieces of paper on a printer, not for computer screens.. Even many computer screens are too small to show the text without scrolling. So the answer is the biggest screen you can get is the best. Today that would be the iLiad displayed in landscape with two pages per PDF page.
I have a Tablet PC with a 1024x768, 10 inch screen and it is barely large enough for many PDFs without zooming in. As has been mentioned many times here, the typical PDF really sucks if you need to view it on a small screen. PDF just isn't designed for reflowing on different screen sizes. Even using a "tagged" PDF isn't a very good solution. Of course, if you create a PDF specifically for the screen size you are using, the results can be good.