If anyone is interested, I reviewed over 10 earphones (Xiaomi, bluedio, Syllable and others).
By far, earfun are the best because of the following reasons:
1. High-quality finish and peripherals.
2. High-quality sound! Superb bass and excellent treble!
3. Only earphones with touch-control volume control!!! YAY!!!
4. Touch-control is not overly sensitive like other brands (doesn't push "by mistake").
5. Only caveat is the active noise cancellation, which is very low (tested on Free Pro).