I see plastic... lots of plastic. Same 'ole cookie cutter design. Durability is key.
If durability, isolation and sound quality are key, the GK Ultraphones are the way to go.
Sony 7506 elements in a Peltor deadphone, 30 dB isolation. Beat match at 100 dB with the PA at 130 dB. They do have slightly more bottom end than the 7506/V6.
You can buy the Peltor/3M muffs for like $20 at Home Depot, so replacing any breakable parts is cheap, though the GK Ultraphones are not.
Expensive, but worth every penny.
Art