I've got several each of Soviet, Polish, Hungarian, Yugoslavian, and Chinese TT pistols, and I haven't found a bad one yet. Buy them all!
I'd agree with the poster above and go closer to the origin first, but that could be a partially emotional response. The Chinese don't look
quite as nice by a couple percentage points, plus the slide markings can be a little crude (‘Imported by Norinco’ and all). At least the 54 doesn't have the needless, ugly safety lever added, like the later Chinese versions (unless it was imported into the U.S.A.).
Some things to consider: currently what's being imported is some very nice Russians and the sweet un-issued Poles; Chinese (unless there is a new batch*) are several cycles ago and sold out, thus harder to find. Also, the Type 54 should come with the up-dated ‘hump hammer,’ which is a minor performance improvement that should extend firing pin life (
thread here).
* Did TradeEx bring in a whole stack of these, or did they just turn up a small supply somewhere?