Summary: The earphones that come with the iPod have a good dynamic range and are of fairly good quality. But, they're too big!!! Even for someone like me who has bigger ears, they're way too uncomfortable to wear for much more than an hour. EarJams are a great solution. They are very comfortable and, believe it or not, dramatically improve the quality of the sound that the iPod buds put out! I'd say they're comparable to the expensive Sony Fontopia earphones I own. They're not great at blocking outside noises (which the Sonys do), but that's not always all that great anyway (try chewing gum with 'em in... all you'll hear is yourself!). Overall, EarJams deliver as promised and are worth the investment.

Summary: I would definitely recommend these ear plugs as a vital accessory to anyone that uses their Ipod during exercise, especially strenuous exercise. The sound reproduction is excellent with crisp clear treble and pulsating bass. They are affordable, effective, and hopefully long lasting.

Summary: I was pleasantly surprised at the difference that these made with both the bass repsonse and overall volume increase. It is nearly a night and day difference with the earbud placed further into the ear canal. Also, nearly all outside noise is cancelled, further improving clarity. For the price, you can't go wrong with these. As a side note, they are compatible with headphones other than stock iPod ones, as it seems that most earbuds are a standard size.