The Sony MDRJ10L headphones, my personal headphones of choice. Out of all the headphones I've used, I always come back to these ones. They're comfortable, sound great, and affordable.
The first thing that made me notice these headphones were the shape. As you can see from the photo, they're quite unique. They loop around the back of your ear, making them very secure. The actual earbuds themselves fit very nicely inside my ears. I personally dislike earphones that position themselves right in front of your ear canal (for example, the iPod earphones), but these ones are a little small and they conform very nicely to my ear structure. Dispite this, the earphones sound great. They don't handle bass as well as other, more expensive, earphones, so you might get a lot of static from bass-heavy music. It also minimizes sound leakage, due to it's unique shape. Finally, it's available in blue, black, and orange; although I have yet to see an orange pair of these headphones.
In conclusion, I think this is a great pair of headphones for everyday listening. It doesn't compare to some of the newer Sony headphones, but for $20 this is a great buy.