Looking for a most secure cloud storage solution!?

For our agency we typically pass a lot of sensitive information. Try briefcasecloud.com. They tout unlimited storage, easy to use collaboration tools (I can attest to that!), and provide VIP-only sharing. It is a private site, but the fact there is no public share link makes us sleep well knowing nothing can go out. No matter how secure a site is, users can still cause a problem. BriefcaseCloud.com eliminates that from being a problem - my vote!