There are so many different brands of these out there and I'm lost. What mAh should I be looking for, what brands are reputable? And finally - where can I buy one that I can be certain that it is genuine without getting ripped off. Thanks!
edit - is this any good? http://www.banggood.com/Original-XIAOMI-5V-2A-10400mAh-Power…
That one had good reviews and was verified as genuine in a previous ozb deal by posters.
That said, mine never arrived and I'm still waiting for the replacement one to arrive from BG.
Size vs capacity is always your trade-off, depends how you want to use it as to what size is best for you.