I was interested to see how these would compare with the Sennheiser/Adidas MX 680
earphones I normally use when cycling.
The main difference is that these MX686G's sit further inside the ear and therefore isolate a lot more ambient sound. However, they do not completely block the ear canal, like many in-ear phones do, and I therefore regard them as still giving a useful level of background awareness.
They also engage much more securely with my ear, and less likely to be knocked out of position by the straps of my bike helmet (especially once I realised that the rubber hook parts can be extended, and once I then fixed them in their extended position with some sellotape). For this reason, I've switched to using them, instead of the MX680's.
I find the Android remote control extremely useful. That said, it's fiddly to use with gloves (three separate buttons for volume up, volume down and pause would be much more sensible, rather than this combined bar).
Sound-wise, they are OK. For casual listening during sport, it's fine. For serious listening in a quite environment, I would look elsewhere, as I found the sound from these to be strangely distant, with higher frequencies a bit muted.
One final thing I like is the flattened cable. It really does reduce knots and tangles.