Please let me know if this is the wrong space to post this.

I have a longstanding professional project that involves a lot of sharing and un-sharing of many folders and individual files. Many are hi-res video files, some are audio files.

Current total filesize is around 650GB and growing with each new version of our project.

Currently we're using Google Drive, but that has proven to be incredibly annoying, since we can't set an expiration date on access, and sharing through aliases is just a mess, to the point that I frequently end up duplicating the files and sharing the dupes, simply because it's faster.

I'm somewhat familiar with most major cloud-based filehosting services like Box, Dropbox, etc., but when we settled on GDrive a few years ago, we did so because the other services either didn't charge a flat fee, or they were kinda slow, or some other reason.

What we're looking for:

-Cloud-based -2TB (at least, to plan for the future) -Flat monthly/yearly fee -Advanced filesharing/access options -Able to handle deep directory hierarchies -Able to designate multiple admins -Fast up/download -Can create account regardless of email provider

Any suggestions? Thanks!