I bought the Pro 3.0 series and they are built well. The only drawback was the large storage cabinets weighed nearly 300 pounds. Not much of a complaint. The cabinets arrived on pallets with several cabinets inside the larger cabinets. It is a two person job installing them. However, all of the holes are in the cabinets and the hardware is great. The soft self-close doors and drawers work great feel sturdy and hold a lot. The drawer divides are sturdy and they give you plenty. I would recommend buying more drawer base cabinets for either parts and hardware or tools. Very happy with my purchase!