Audio Technica ATH-CKM300: I call this CKM500's little sister. Everything from the build quality, design, comfort, sound isolation and microphone is identical to it. So I'll just focus on sound quality because that is where the two have differences.   Sound Quality: The sound that this earphone delivers is in no way neutral. The sound is more emphasized at midrange and treble, while the upper bass takes everything behind. This kind of delivery brings so much detail and clarity in sound. I'll break down the SQ in each category: bass, midrange...

Build: Build quality is decent. But the J-cord flat cable is a nightmare. It's so bad that I would consider it as a deal-breaker. First of all, I have no problem with J-cords. But for a J-cord with stiff flat cable? It's possibly the worst combination ever. Not to mention that they've placed the remote just beneath the left earpiece. That means the remote will always stick out right beneath your left ear and produce a lot of cable noises. And it's such a hassle to use the remote because of the placement. I would much prefer if it was placed lower...