butt plugs

What makes this pump better than other pumps or what makes a pump butt plug better than other butt plugs?
The first question requires some experience with this pump, which I do not have, so I cannot answer. The second question is easier to answer from a general standpoint. If the plug works, then you can get more of a stretch out of a butt plug with a pump than you would get out of a standard butt plug of the same size. That being said, the air that is put into the plug is more compressible than a regular plug, so if you really want to stretch, keep getting larger plugs.