Seamless access across all devices (phone, table, browser, laptop). It is also very easy to use - no training required (although training will show you some cool things you might not find on your own so don't skip it).
Folders which are shared with me show up in the browser but not from Windows Explorer. I can't think of anything else.
Have your users set up their default file directories under the ShareFIle Personal Folders - they'll love it! I still use DropBox for personal items but ShareFile is great. We have users who used to swear by iCloud , DropBox, etc. and all of them like ShareFIle best now.
Trying to find an easy way to share files with clients. ShareFile solves this very nicely - easy interface for the "sharer" and the "sharee". We also back up our ShareFile documents so we set our PCs up to save documents to ShareFile - ensuring backups and access across any device.