tu154,
I tried the Bose when they first came out. While they were nice, I really don't like the price. I went with the Telex ANR4000 \. I was flying Metroliners and B100 King Airs. I was quite pleased with them. The difference between them and the Bose was almost indistinguishable and the price was about 1/3 the price of the Bose. Last year, I upgraded to the Telex Heli-XT headset. I have been quite happy with it. Telex's support is as good as David Clark's support. Telex uses AA batteries which makes it a better choice than units that use special rechargeable batteries. The only units better in these regard are the ones that get their power directly from the radios. Due to a couple of features of the Telex, it appears that this was not possible.