There appears to be a bit of a wobble left to right when tilted back slightly but not when the chair is straight up. Otherwise it is comfortable and the upholstery appears better than average.
Chair is good looking easy to assemble holds height position well. Seat is comfortable and movable armrests are a good feature. Reason for a 4 is that my shoulders hit the pillow part of the chair when I sit back which is uncomfortable after a few hours. I’m 5’11” probably designed for 5’8” or 5’9”.