The metal ones seem to last pretty well forever if you take care with them. I still have some old Kodak cassettes from the Panatomic X and Super XX days, and they still work well. I also have some I bought about 25 years ago, and they still work well.
I also use mine again and again and they seem to last forever. My newest ones are 3 years old and they are fine. I just give them a blow before I load the film.
I have some that go back far enough they predate DX coding.
By storing them in film cans when not in the camera, the felt tends to stay clean.
I have every five years maybe, given the felt a vaccuuming with a crevice tool when I am doing a big mid winter bulk loading night. Other wise they seem to work fine for many many reusues for me.
I have only recently started to use a film leader retriver, and accordingly I now load the bulk E-6 film in my stash onto reused provia cans as I use up the factory loads, so when I wander into a good DX reading camers from time to time the latitude is correctly handled.
When taping onto a protruding tail, I stick to BluMax film spilcing tape bought from a lab. It sticks film together very well, with no gooing, like some masking tape can do with time.