I also use and love Superior threads. I met a man at the Chicago Show--we were both taking a break and having coffee. He was from their booth, had worked for them for years. I had asked him if he had pre-wound bobbins for a Juki, and low and behold he did. I followed him back to his booth and stocked up!
After I got home I also found I was given a "great" deal.
They really do care about all their customers.