I'm going on a trip to austrailia for two weeks come April, and I need some good noise cancelling headphones. I can spend around $150-$200. I went in to a Best Buy the other day and I tried on the qc 15s. They were really nice. I don't have $300 and I can't get enough by the time I leave. I don't really have a tuned ear where I can hear all of the detial of the headphones but I can tell the difference between good and bad heaphones. Can someone tell me what I would be sacrificing going with the pxc 350s (or any other headphones in that price range) vs the bose qc 15? Can you also tell be a good piar of headphones around my price range?