So Microsoft recently released Word, Excel, and PowerPoint for Android tablets ( also Outlook preview). Anyone that needs to view documents should find these are good, very smooth to use. You need a Microsoft account to do any editing/saving, don't know the details further since I didn't bother with the account. I could view large Word files (~40MB, 40 pages) without problem. Didn't have any bigger ones. Excel you can type things in and create without an account but not save. So for those who still use Office this is a good option for viewing files and editing with an account.