Any Hi-Fi fans here? I am going to buy a headphone to listen mp3, dvd from the cube mostly. The cube speakers are quite good but not loud enough. Open or Close isn't an issue. Any suggestion? Under $150, the cheaper the better.... Sony v6 and v600, senn 580 seem popular. Since I will use the headphone 90% for cube, I DON'T want to get a headphone need more power than the cube can give (can't find the amplifier headphone jack watt output) or too good for the cube. I listen to most music and like some bass.