Summary: The bass on these is amazing and can rival low end in ears. It doesn't drown out the other parts of the sound because it actually sounds like there is a separate layer of bass on the music. The clarity is good and the sound is rich and dynamic for earbuds, especially for its price.
Summary: These are quite common in retail stores in my city (Toronto) and cost around $15-$20 CAD. I've been using them for years, because they are inexpensive, sound decent and are portable. They don't sound too distorted at high levels.
Summary: These ear-buds were just lying around my sisters house, no idea whose these are but they are kinda pretty good. They are quite sensitive 108dB/1 mW, and I don't have to turn the volume more than 20% in windows volume to get enough pressure for all needs.
Summary: These headphones are great. If they fit, they cannot be beaten at the price. Unfortunately, I can't even keep earbuds in my ears, much less have them isolate.
If you need replacement earbuds, this is the right choice.