I'm gonna get some ear muffs from Elvex or Peltor that have an FM stereo built in. My question is which model from Elvex or which model from Peltor? And I am curious about some of the features I see they have, but am not totally sure about them and wanted to get your opinions and your knowledge on this. My questions are about the ones with the mic feature and the ones with the communication channel what exactly are they, how good do they work, are they useful, etc. Not to mention I believe I've heard Eric say that they have some that you could hook a CD player up to? What about those? Help me out here guys,.....thanx!