Bests & Worsts Reviews from Amazon

Was trying to determine which External Battery Power Bank to purchase, either the Anker PowerCore 10400 mAh or the Anker E3 10000 mAh! With over 8000 reviews for the Anker E3, and both at the same price, it took some extra research. Both have similar charging rates and capacity and I chose the PowerCore 10400 because: 1) It uses the more advanced Panasonic battery, although the LG batteries are good, there is performance differences for the Panasonic; 2) I prefer the more compact package of the PowerCore (thicker and shorter than the E3). One or more previous reviews stated that the PowerCore was somewhat slippery when on a desk, but I knew exactly how to remedy that by placing four extra small 3M bumpers # SJ5302 that I keep on hand and sold by Amazon. I can now place the PowerCore on a 45 degree angle on a slick surface and it's not going anywhere. Of course I researched countless Power Banks, and I keep coming back to Anker (I have them in two vehicles, a boat, bug out bag, and larger ones in the house for Hurricane season) because of their consistent quality (the little bags that come with them are great too) and longevity of maintaining their charge. Now with the new Panasonic batteries, I also bought another Anker Mini in the PowerCore series not because of 3350 mAh over 3200 mAh, but rather the Panasonic battery and the faster charging time for the PowerCore version.