For anyone forced to work or travel in a high-noise environment, Active Noise Canceling headphones are a blessing. The price of a good pair of ANC cans, however, is a curse. If a set of ANC headphones by Sony, Bose or B&O are out of your price range, you might want to consider giving Pantronics' Backbeat Pro 2 headphones a listen. While the company cut corners on the quality of the materials used to make them, the Backbeat Pro 2 sound good enough to keep you from tossing them out and keep out enough noise to make them a good investment in preserving your sanity.
You can read my full review here.