I have an office 365 subscription which is using thee E3 plan and for the most part it works really well. The issue Im currently dealing with is a problem with One Drive for Business. For time to time the sync breaks on one or two files and I just cant get them to sync again.
This has happened on a few occassions now and the only fix is to recreate the sync'd pair again which is time consuming due to the internet connection pretty slow.
The OS is Windows 7 64bit and the One Drive app is the latest from the Office 365 portal.