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I think Google Drive has a HUGE advantage over Dropbox - it's a Google product. I know there are those who don't care for the unification of data streams by Google, and they make some valid points vis a vis privacy. Even so, there are so many Google products that can been potentially seamlessly integrated into Google Drive, such as photos in Picasa, music on Google Music, messages in Gmail, documents in Google Docs, videos on Google+. If Google can create an easy method of getting all of that data into Drive, and they provide 5GB of free storage as rumored, which is more than twice what Dropbox gives you for free, and match or undercut the cost of additional storage, than I personally don't see any reason to choose Dropbox over Google. Well, except for those privacy concerns I noted earlier.