I use the Tellex Stratus 50 D in the EMJ. Personally i think it works great. on long days with 5 legs i definitely use the ANR as it seems to help with fatigue. on the shorter days sometimes i just forget to turn it on, as it has great passive noise reduction as well. one thing i have found is that the mic is especially sensitive so if you are sitting there all quite you may hear some static feedback which gets annoying for both pilots. (i think it has to do with the added digital noise reduction system that Tellex put in it). also it is a little bulky.

overall its a great headset! i think its better than a Bose because of the passive noise reduction you get and the new digital noise reduction.