I normally wouldn't ask such a general question here. But I just started my own company and suddenly found myself in need of a team based file sharing solution. My developers and designers work all over America. We use subversion for our code, but we still have a lot of files we need to share on a network type drive with each other. If we were in the same office we use obviously use a NAS type solution.
We have a low budget and don't care as much about speed as we do accessibility. What is the best solution out there for cloud based managed storage, that you can mount like a network drive?