Here are the best headphones by category
Best headphones, full-sized:
Sennheiser HD 650 (*est. $300)
In reviews, experts say the Sennheiser HD 650 headphones offer the cleanest sound, even at high volume levels. The Sennheiser's deliver the fullest base and precise left/right matching. At 9 ounces, the Sennheiser HD 650 headphones aren't very portable, but reviews do say they are comfortable. That makes them ideal for hours of home-theater and hi-fi listening, but not a great choice for iPods and other mobile players that simply can't deliver enough power for these headphones. (compare prices)
Best value, full-size headphones:
Grado SR60 (*est. $70)
The Grado SR60 has great staying power. Though these headphones have been on the market a long while, they are still review favorites, scoring points for bass reproduction and durability. The Grado SR60 headphones also have a huge following among music lovers, who say they're a great companion to an iPod. At 7 ounces, they aren't the lightest, but they're not the heaviest either. Their traditional styling gives them a retro cachet.
Best noise-canceling headphones:
Sennheiser PXC 300 (*est. $130)
Although the Bose QuietComfort 3 (*est. $350) get the most attention among noise-canceling headphones, some reviewers prefer the lighter, less expensive Sennheiser PXC 300. Experts say the Sennheiser headphones are light (2.3 ounces) and comfortable. They don't enclose the entire ear; they also fold up for traveling. Noise-canceling headphones use special technology to drown out ambient noise so you can hear music better -- making them a great choice for use on airplanes or trains. (compare prices)
Best lightweight headphones:
Sennheiser PX 100 (*est. $40)
The Sennheiser PX 100 headphones are just as light as the Sennheiser PXC 300, but because they don't have noise-canceling technology, they cost significantly less. Reviews say these headphones outperform their price, with rich, full sound and accurate sound reproduction. These Sennheiser headphones fold up, so they are even more compact. (compare prices)
Best audiophile in-ear canal headphones:
Shure E4c (*est. $300)
Canal headphones extend further into your ear canal than earbuds, so they may take some getting used to. Still, this type of headphone is better than a noise-canceling full-size headphone at blocking out ambient noise. In-canal earphones can cost up to $500, but reviews say the $300 Shure E4c are excellent, and better than the cheaper Etymotic ER-6 Isolator. (compare prices)
Best value, in-canal earphones:
Etymotic ER-6 Isolator (*est. $90)
Reviews say the Etymotic ER-6 are a great match for iPods and other portable music players, and that they cost far less than most in-canal earphones. Most reviews say bass is a little thin, but that the Etymotic are a great value. These headphones come with a "fit kit," which includes several ear tips for different ear sizes and shapes. (compare prices)
Best earbuds:
Sony Fontopia MDR-EX71SL (*est. $30)
Although experts say most earbuds can't match the sound quality of over-the-ear headphones or in-canal earphones, these Sony earbuds make a good replacement for the lousy headphones that often come with portable DVD players and MP3 players. The silicon caps mold to your ear shape, and reviews say they are a better fit than most in their price range.