I've been using the QC2 w/UflyMike adapter since I started working at Colgan, and it is wonderful!! If you want it to be a little quieter, just put in some earplugs and you're good to go. Works like a charm for listening to your iPod/iPhone as well!! Oh, and as far as the TSO issue, UflyMike is now TSO approved ... check out their website. I think it's a new development.

In short, if you want a good Bose headset without paying $1k to get one, the QC2 w/UflyMike adapter is definitely the way to go! Very light weight as well!