BuyDig offers the Able Planet Travelers Choice Active Noise-Canceling Headphones, model no. NC190SM, for $44.95. Coupon code "ABLEPLANET20" cuts it to $24.95. With free shipping, that's $65 off list and the lowest total price we could find. They reduce ambient noise by 94% and feature a frequency response of 20Hz to 20kHz and in-line volume control.

Also available are the Able Planet Infared Wireless Headphones, model no. IR210T, for $34.95 via the above coupon. With free shipping, that's the lowest total price we could find by $10. They feature a 33-foot wireless range, on-ear volume control, and frequency response of 20Hz to 20kHz.