What is the best online or cloud way to share files

[Mike Strodtman]

We have a part-time bookkeeper who takes care of all the bills, collects rents etc.  We presently use Q Box which has been working well, although wondering if others have used something else and what their experience has been?

For us, it is important that each of us has access to the documents and be able to make changes to existing documents, quick books, and up load new documents.

Do any of you have good examples or past experience with online or cloud host locations.  I would also be interested in hearing about ones we should stay away from.

Thanks in advance for your help!