The second-generation over-the-ear Beats Solo by Dr. Dre headphones deliver impeccable audio performance with passive noise-canceling in a much smaller package than its predecessor did. With built-in controls for MP3 players like the iPod and a microphone you can use for hands-free calling, the Beats Solo offers something for everyone. As for sound quality, the company promises you'll hear everything that artists want you to hear, including deep bass, unadulterated highs and excellent midrange sounds. You trust a doctor who's won multiple Grammy Awards, right? Price: $200.