I ride the bus to work and I found that my Sony FontopiaŽ MDR-EX81LP earbuds (~$50) just could not compete with the noise from the bus and the passengers. After trying out the Bose Quietcomfort 3 headphones at an Apple Store, I decided to spend the money ($350) and purchase them (fortunately, Bose.com has a deal where you can pay for the headphones over 6- or 12-months without interest). These headphones are amazing! They really reduce the amount of background noise on the bus and allow me to enjoy my music without hurting my hearing. Furthermore, the sound quality is excellent. I listen to an eclectic range of music (Ben Folds, Aerosmith, Rush, Tchaikovsky, etc.) and these headphones do a wonderful job of reproducing the highs and lows of everything I listen to. While they are pricey, they are definitely worth it if you want to be able to enjoy your music (or audio books) without blasting your ear drums.
Recommend this product?