I personally own the EasyAcc 10,000mAh backup battery, and it is fantastic for the price. It should absolutely win this vote. I bought it prior to going on a camping trip with my family, and lo and behold, the camp site had no electricity. This battery provided enough power to charge our cell phones several times completely, and whenever we went somewhere in the car, we'd plug it in to charge for a while. It was a life saver!