I purchased new iPad (3) primarily for the purpose of reading scientific journal articles. I very much appreciate any suggestion for the following problem. I read articles in pdf format in multiple devices (desktop, laptop and new iPad); the articles are in my dropbox folder. I also need to be able to edit the pdf files in iPad as I can do it in my PC with Acrobat Pro X. I need to be able to edit the same pdf file in both PC and iPad and access it in all devices. So... I have a pdf file with comments, highlights inserted with Acrobat Pro X in PC... like this [if you do not see image below, then look at the first attachment] What I open that file in iPad, here is what happened. If I used Adobe Reader, I cannot see any of these comments or highlights but the text looks crispy with no resolution issues. If I used PDFReader Pro Edition for iPad (yes, the $9.99 one) to open the file, the text is much much blurred, the the highlights have faded color and comments have different font type and color. [second attachment] I added a comment and a stamp in PDFReader Pro Edition for iPad. This file looks like below when opened in Acrobat Pro X in PC. Now, original highlight color has been re-established but comment text font has changed again. [third attachment] Is there any app that (1) does not have any issue with reading pdf files edited in Acrobat Pro X, (2) can easily edit pdf files and Acrobat Pro X can read it without any formating issue, (3) has no resolution issue and can display crispy text as Adobe Reader or Pro X does. In the absence of such app, I am likely to return the new iPad. Any suggestion is appreciated. Thanks in advance.