I was actually looking for inexpensive bluetooth headphones a few months ago and ended up buying the RF-MAB2. I've had no issues with them.
The battery life is great, I use them for around an hour each day and they typically last me a week and a half.
The controls on the headphones work good too. Has volume controls, next/prev song, play/pause and the power/call answer/hangup/ voice command button.
Audio quality is fine. Obviously it isn't going to be super awesome like some high end headphones but it's definitely good.
I'd recommend them to you if you are looking for decent, inexpensive BT headphones.
I'm not sure if this is a problem with the phone, the bluetooth or the headphones but if I have the wifi and the bluetooth on on my phone at the same time the music skips a lot... took me a while to figure out it was the wifi doing it so if you are using them on wifi and they skip you gotta shut off the wifi, other than that they are great