There really is a difference when it comes to dental floss.
I’m more of the threaded than the tape type. With threaded they usually infuse it with a strong minty flavour because you can do that sort of thing with thread. With tape it’s kind of impossible because I think with the thread the flavour is inside the wax coating but with the tape (which is plastic) the flavour has nothing to bond onto.
Also, the plastic stretches whereas the thread does not. It is a huge pet peeve of mine to use floss which stretches.