I spent several days researching different Bluetooth headphones from Jaybird, Motorola, and others before finally deciding to take a chance on these Plantronics BackBeat Fits. I was trying to match various requirements and desires, but ultimately the deciding feature I wanted was a design that wouldn't isolate me from the world around me. I was seeking a set of headphones to wear at work, and I needed to be sure that I could stay aware of things going on nearby (desk phone ringing, boss talking to me, etc) while listening to my music. That strict requirement readily eliminated a lot of potential contenders.
Range: I left my phone on my desk and walked to the restroom at work - I'm not great at estimating distances, but it's gotta be ~35 feet to the door. Music continued streaming cleanly until I actually entered the restroom and the door closed behind me. I'm impressed!
Battery Life: I listen to tunes pretty much all day at work (minus a lunch break) and they easily make it through the day. A solid 8+ hours of life is pretty impressive for such a lightweight headset - particularly one without a bulky battery module. The spoken "Battery Low" audio alert makes sure you won't be surprised when your tunes eventually do stop playing.
Overall, I think these are the perfect fit for my needs. Audiophiles probably won't be impressed by the sound quality (after all, it's hard to compete with a design that instead injects the audio directly into your ear canal), but if you're after headphones to wear at work or while working out I think you'd be similarly pleased.