Best noise canceling headphones?


I am trying to decide on headphones that are noise canceling but I have no knowledge about good noise canceling headphones. Could any of you give me suggestions about great noise canceling headphones that have little to no distortion and great clarity? Budget right now under $400.


Honestly, I'm in love with my PX - 22 headset, it's not that crazy high end at 75 bucks but damn it's good for the money.