The stools appeared to be reasonable, not great, not bad.  The swivel mechanism was noisy when no one was sitting on the seat.  The mechanism was a lot less noisy when weight was applied.  Hopefully as the swivel mechanisms wears in the noise will go away.  If I have a really concern I am not sure how well these stools will hold up in daily use because most of the joints appeared to be held together with dry wall screws.