I have LG since day one and these have to be the worst of all. Volume to hear other during call/music is very low compared to other models. Bluetooth also disconnects off and on after about 2 hours of use. There also an alert beep that goes off every now and then with no alerts going on my phone.
I just received these today and so far they are the best ones I have had yet. I would suggest if you are going to get any get these because they are awesome.