The DP-1 is the standard, heavy-duty professional net set format which you screw on to the table. This is a very sturdy net set; if an intruder breaks into your home you can basically knock them out with it. The posts are heavy-duty steel and are essentially indestructible. The mesh is high quality and you can tighten it very tightly.
It compares to any of the expensive Japanese or European top brands that will run you $75-100.