I've got some SS reels from just before dirt was invented and they have a wire "U" around the central legs. slip the film in and done.
What I have experience is that the off brands or other than Nikon, Kindermann, Hewes, often don't work or are hit or miss. With the ones that work, Nikon, Kindermann, Hewes, they always work, never a problem. Everyone will have their personal favorites. The best plastic reels I have ever used are the Jobo ones.