The quality blows away many of the other self-assembly shelves.  It is well constructed, heavy (which I view as a plus), and I love the finish.  The only reason I took off one star is that eventually, the doors (added a "Series C: Half Height Door Kit" kit) rub on the bottom.  I believe this is the fault of the cabinet eventually flexing some due to it sitting on fairly plush carpeting.  Initially they were fine.....and the doors haven't changed.  I can push slightly on the cabinet and change if / how much they rub, but it's not bad, and I think if it was on a firmer surface, they would be fine.  Overall, I'm still VERY happy with my purchase.