I've been using these for about a week now and have been very satisfied. The battery life is very good (I can usually get 6 hours on just one headphone) and because of the curved design, they fit snugly all the way into
I love about them is that you can easily switch between using one headset individually or both together by just taking out whatever you want from the case.
I usually wear earbuds to bed, but I have always had trouble with them either falling out while sleeping or having a cord wrap partially around my neck in the night. As a stomach sleeper, finding a good pair has been difficult. I always worried that earbuds would fall out and I wouldn't be able to find them again. After having these ear buds for almost 2 months, I can definitely say that they are the best pair I have owned that allow me to not only sleep with them, but they actually stay in.
The sound quality is good, but of course higher end headphones will always sound better. Connections with devices is fairly solid, but if you go into another room and have to pass through a wall or a large distance, you will hear the sound break fairly easily. As long as the source is close (10 feet or less) or if you are unobstructed (maybe 20-30 feet), you will not get interrupted.
Battery life for me has been about 6-8 hours per bud and at the last 10% you get a "battery low" voice that echoes every 5 seconds which can be annoying. The charger is nice