Pros: Great sound quality, fit in ears
Cons: Durability, bass
For $100, I am completely satisfied with the earbud's comfort and fit in my ears (guarantee one of the three sizes will fit), the sound quality (compared to so many headphones at the $200 range, including Beats by Dr. Dre at ~$300), and the controls (now I use the Galaxy S2, only the middle button works).
Unfortunately, after 8 months or so, my first one broke due to it breaking between the plastic wires and the jack (wished it would be shaped like an L, making it more durable). Humid, static, and cold weather will also mess up the volume and playback control. The bass is also pretty weak (it's not invisible however).