This review is for the 90"x90" Heavy Duty Mega Rack that I received about a month ago. It is extremely durable and solid.  No wobbling at all.  It was easy to assemble....may need 2 people to assemble due to managing size and weight.  But it stands impressive, and is easy to fit into many configurations within a garage.  Once it was up, I received many compliments on it from neighbors and family members.  This Gladiator product seems just as sturdy as the other Gladiator items I have had in my garage for 14+ years. I haven't yet tested the 8000lb limit but I have loaded it down pretty good, and it gives no indication of failure.