I wanted something that would drowned out the casino noise while I'm playing poker and sound good as well, while I'm listening to MP3's on my EVO. I also travel by plane a couple times a year and have been wanting these for awhile now. You can read about how well the QC15's work all over the net, but I wanted to report that the iphone cord that is supplied with the QC15's will alow you to answer the phone and talk through the headphone, on the EVO. The volume controls don't work, but the button to answer the phone does, and so far, everyone I have spoken to while using the headphone as I talked, said I sounded nice and clear. BOSE does sell a cord for other phones, but it's another $30, so it's a bonus that I can answer and talk on my EVO. I haven't had a chance to see how well the phone converation goes in the noisey confines of the casino, I'll let you know on that, later.