This is my first pair of the Vapor Xs. I’m not sure if the shank is the same as the original “bred” onesJust look at the shank whenever you can. The wear on the plasticky pyramids will be evident. I had that issue in the first try of the Vapor Xs. I have a sneaking suspicion that it's been addressed in new Vapors. But maybe not.
I have had that issue in the Cage 3s (and Cage 2s).