I have just switched from Dropbox to SugarSync. The reasons:
- With SugarSync I don’t have to put all my files into a dedicated directory. The interface lets me choose any directories.
- From time to time Dropbox would lock Word files, which would become read-only. This was particularly annoying.
- SugarSync offers 5GB free + versioning (2 versions for free, 5 versions in paid solution)
- Better pricing solutions
- You get nice URL (username.sugarsync.com) 😉
Just give it a try: Get SugarSync!