Overall I like the chairs, but they are super tedious to assemble (finicky and in some cases you don't have good mobility to turn the allen wrench, etc.).  And it's also difficult to prevent wobbling.  Also, two pieces had manufacturing defects (a half-broken peg on one of the braces and a chair back with the holes drilled at slightly-wrong angles) making them extra difficult to assemble.

After assembling 4 chairs, I think the trick to getting them not to wobble is in how you attach the seat top.  The instructions tell you to do it with the chair upside down but that provides no guarantee that the feet are in a flat plane. So I think it might be better (though much less convenient) to do it with the chair legs on the ground (and maybe even put some weight on the chair, like a person).  Unfortunately since you are self-driving the screws and there are no slots in the bracket, if you mess up (the chair wobbles), you probably have to move the bracket and try again, making new holes.