I am trying to see how far I can go in using my iPad 2 as a primary computer. The vast majority of my hundreds of documents are in Microsoft Office formats. I have downloaded test files of Excel and Word documents to Dropbox and have installed iWork apps (Numbers and Pages) on my iPad 2. I am able to open docs from Dropbox into the Pages an/or Numbers apps and then work on them. However, I am not then able to re-export/save them to Dropbox. I understand that a major drawback of using the iWork apps is that the documents cannot be saved anywhere except into iCloud. I thought of trying to use iCloud instead of Dropbox to store my files, but iCloud does not permit directories; thus putting my hundreds of documents into iCloud would be incredibly chaotic and would make it almost impossible to find specific docs due to the lack of a directory hierarchy. So far the best work around I have come up with is to store my docs on Dropbox and preserve the directory structure (and thus order) and open/import them and work on them within the iWork apps on my iPad2; after which the modified docs would then automatically be saved in iCloud. I could then email them to myself and upon returning to my office I could open them on my office computer (from the email) and then save them to Dropbox. Has anyone found a more effective way to use an iPad 2 as a primary computer when most of their docs are in Microsoft Office formats (xls, dod, ppt)?