I think Yazoo Mills is my new favourite company. I really wish I had a compelling need for cores or tubes.
Their FAQ page is particularly notable, inasmuch as it appears to actually contain questions that are frequently asked, among which:
What’s the difference between a tube and a core?
A tube is used to put something inside and a core denotes that something is wound onto it.
Do you have any minimums?
We have no minimums. We will make you a single tube, box full, or a truckload.
What lengths can you do?
Any length up to 53 feet.
A 53 foot tube! The mind boggles with possibilities.
I also like that they include the FAQ titled “Services We Do Not Offer”: all company websites should include this section.