I bought the old batch last year, but had to give them back. I cannot keep them in. The one in my left ear just pops out in a light breeze, or the slightest tilt of my head. I have the horror of an ear canal that is too large, Apple!My batteries are trashed, too. Only about 40 minutes worth of call time (continuous), starting with a full 100%.
I'm just desperately trying to hang on until a new generation... I was expecting any day now, but looks like I may need to wait for another few months. Ugh.