Our office bought 4 of these.  Out of the 4: all of them have foot end caps that keep popping off, 1 of them has a lopsided base which forces the seat to continually want to turn and the other squeaks whenever someone moves on the chair.  The other unfortunate part is jeans will rub blue off on the white chairs.
I would give them 1 start, but they are comfy and nice looking.