Got myself some of new Powerbeats Pro today from Apple. Promptly went out for a 10k run with my 5+ listening to some dance tunes when I got home.
Sound quality is very good. Headphones are comfortable, my ears did not ache at all. Sound did not drop out once with my Fenix.
Wind noise still an issue though. I live in the UK and it always windy here, so in come cases it was really noticeable. Not sure what can be done to rectify this problem really. Running through some woodland out of the wind and things were much better.
Thought this might be useful for anyone who is tempted with these.