Pros: Amazing headphones, the bass is really awesome. Everything is clear. Noise isolation is really good. Very strong strain relief. Definitely worth 80 bucks.

Cons: None really unless you consider not having a volume control to be one.

Pros: Good Sound Quality. I have 2 other over-ear headphones that delivered about the same or worse sound quality than this in-ear headphone.
Work well with all my devices. No problem using the button function to play-fast forward or go back on my Samsung Galaxy Note.

Cons: Not quite sure how to think about this issue. When i plugged into my computer. Sometimes the audio sound very odd, almost like u only hear audio file on one side of the environment (left or right) even when both earphones playing the sound. Had to kinda twisted the jack a bit around to get back the right sound quality.

Other Thoughts: Good earphone, Good price.

Pros: Good sound,superior quality....

Cons: none

Pros: 1. The microphone is excellent. Even in a noisy CNC shop environment, my fiance was able to hear me just fine.

2. Having a button to pause and play music, as well as answer, make, and answer incoming phone calls, is really neat.

3. Huge variety of earpieces. You shouldn't have a hard time finding one that works.

4. Comes with a carrying case so you can keep the earpieces clean when in storage.

5. Sound is excellent. The bass is impressive for in-ear headphones. I've had over-ear headphones fail to reproduce bass on this level. I hear the same amount of detail I do with the component 2-way system in my car.

Cons: 1. You do need to use the clip so that the weight of the wires doesn't pull the earphones out, especially if you use these at your job and are moving around often. That's pretty typical of in-ear, so not about to dock an egg for it.

2. The "volume" change feature, as well as "previous", don't work well on an HTC One M8, but that is most likely an HTC Sense issue versus the headphones. Changing the volume opens up Google Now instead (which is actually kinda neat for making quick phone calls), and "previous" does the same thing "next" does. Keep in mind, these features may work on your phone; however, if you own an HTC One M8, know that there are hiccups.

Other Thoughts: I'm a heavy bass and highs type guy, so I need to install an equalizer that will work with Google Play Music (why they don't have a built-in equalizer is beyond me...), but as far as I can tell, these headphones reproduce all frequencies pretty dang close to level. They don't emphasize highs or give bias to base, and are pretty flat right out of the box, which is typically what you want anyway. It's irritating dealing with headphones that have bias out the box and I'm forced to use an equalizer to get the sound flat when I'm playing games or watching movies (I only prefer heavy bass and highs when listening to music, for gaming and movies I keep the equalizer flat).

All-in-all, they are worth every penny. You won't be disappointed with these headphones.