We need to purchase a Quota program, to limit our users storage. We had
issues with the built-in MS system, as, it only did users, not groups, and,
required the user to be an Owner, and, we prefer that they only have Modify
Rights, due to some abuses that happened.

Ideally, we would set a quota on a folder, and, that folder (along with
subfolders and files) would be limited to a certain size, regardless of who
put the file there.

Any good programs out there?