after hours of my own research I also bought the Anker Slimtalk. I dont travel enough to need one that is huge and can charge my phone 8 times. This seems small enough to toss in my pocket and not bother me since its so thin and light. For $20 and the convenience of having its built in micro usb cable sounds like a perfect little invention to get me through the day.
I just wish it had a built in AC adapter as well but I'm sure the size would increase by quite a bit. Someone (iGo maybe) makes one like that but it only has about an 1100mah battery if I recall.