I bought these at the Apple Store (had a $20 gift card, so I only paid $30+tax, though they cost about $50 at the time). They work okay for blocking out annoying treble and mid-range background noise when you're listening to music, but low-pitched rumble (e.g., airplane or subway engines) will still make your travels noisier than you'd like. No matter, just crank the volume a notch or two higher on your listening device, and you'll get pretty good sound quality for earbuds in this price range - I only gave it 3/5 stars for audio quality because I...