I have owned a Mach1 for a while now. Flew with it all through school in Seminoles. I like it. Fwiw, I did get the custom silicone ear pieces. I would recommend them.

I am now in training to fly the EMB-145 and I was about to buy the Bose-X both for ANR and because I have been told the expected impedance in the EMB-145 is 500-600 ohms and the Mach1 is only 400ohms. The Mach1 might heat up I am told... ? Thoughts?