I've replaced my Suunto with the 5x few days ago, so far it's been working great and I'm very happy. I did have problem with HR broadcast disconnected from my Edge 520 at least 4 times during my 5 hours bike ride today. Happened mid ride, not during pause, it just went to home screen without any warning. The 5x and 520 is just a few inches away from each other.
Anyone with the same problem?