Not that anyone asked, but I'll toss in my $0.02 here. I recently started running (i'm 37, never too late) and the first few runs I had my phone in a 'running case' on my arm and regular headphones with a cord. Annoying is just the polite word I'd use with reference to the cord.
Today was my second run with these bluetooth headphones. Totally hassle free. I liked that they came with different earpieces (although I think most do now), I was able to find one that worked for me (again, your mileage may vary, and I can certainly see how some people might not find something that works for them).
What I will say is that I wear glasses and don't own contacts. I am not able to wear these "correctly" with my glasses on. They want to be in the same place on my ear and it creates a very uncomfortable pressure point (hurts after just a minute, please also account for the fact that I could be a wuss). Anyway, I can turn the headphones "upside down" and they work just fine. It's clear that they don't fit perfect in my ear when I do that (kind of "duh") but it works. Two 3 mile runs and no particular issues. They fit snug, even in the upside down position (I've tried a short 1/4 mile run with my glasses off and wearing the headphones 'properly'... seems to be ok for me w.r.t. comfort).
I haven't used them enough (IMO) to speak about battery life, they've only had to play music for just under an hour so far.
Last comment is if you have reasonably large hands, the controls can be a bit cumbersome, in that I tend to grab the headphone to get control of it before pushing a button, and end up pushing one if not all of the other buttons in the process. Feels like I just need to get used to that.
Ok, that might have been $0.04, hope it helps someone on the next woot.