Hi; the Asian movement you would get is not a 21J. It would be a 'clone' of the 25J ETA, different
animal. Another story is -will you get a gen ETA from the dealers? Sometimes yes, but often no. Personally,
I prefer the gen movements when possible. Many people have given up the guessing game and stick to the clones.
If you want a real movement try to get one with a SW-200, they have not been cloned yet as far as I know.
Your right, ETA has been cutting the supply of movements to non Swatch companies.