there are a bunch of opinions on this, even a link to a shootout between the two someone did in this forum somewhere, problem being typing in the correct combination of words into the search.
oktava gets a lot of play here.
tried to search out the shoot-out but could not find it.
as i remember, the china was a little brighter (as would be expected) and not as nice in the low mids, but a plenty good mic that some people liked better
(specifically people that like slightly brighter mics)