I love the porta pros. If they break you can replace the drivers with the koss ksc75, they're cheaper and sound slightly better imo and they clip right on to the porta pro headband.
Also, I highly recommend replacing the stock ear pads with yaxi pads, they're super comfortable and definitely worth an extra $12 if you wear them a lot.
I didn't know Portnoy did anything except pizza reviews. What a tool.