Hi!
Got a new lathe some weeks ago (Chinese, can't afford the real thing; didn't find used what I wanted). The 3 jaw chuck that came with it was "perfect" Chinese craftsmanship. It could only be opened with one of the three holes. I returned it and said, that I want a Röhm chuck (willing to pay the difference) as replacement. As they didn't have it stocked, they lent me an other used Chinese chuck. Similar crap.
This week, the Röhm arrived and it is -despite that it is not their high-end version- *damned* accurate. Runout is guaranteed to be 0.03 mm (or so) for a 160mm chuck. In fact, it is 0.002mm without fiddling. Just drop the part in, close and you're done. Lathe's spindle nose is Camlock.
It is fun having reliable tools!
Nick