We have only had this box for a month but so far it appears to be of good quality.  Sturdy material and framework.  Sitting on it is no problem.  Very spacious and stores several cushions.  My only complaint is the assembly instructions are NOT clear and the panels are not marked well.  I really like that the box just snaps together.  However, because of the poor instructions the box can be assembled incorrectly and then it is very difficult to disassemble.