Patterson tanks and reels, I use the 2, 3, and 5 reel sizes. Stainless steel never felt right in my hands, and led to the constant worry of creasing the film, jumping one section of the spiral and having to go back and reroll because the film doesnt fit all on, and taking care not to drop them or they get bent. Bent stainless steel reels are the worst... ugh and you never because they get lost in the pile and when you try to load it in the dark thats always the time to find it.