HSK vs ISO is debatable... Most 9KW HSD spindles I see (long or shortnose) use ISO30.. for woodworking routers.

12000RM.. is an option..
You can get them in 18000 and 24000RPM...

That all said... the point is..
*** Can Anyone share a review.. of how the Chinease ones perform ***
are they loud? do they vibrate more? do they fail quickly?

Thanks guys