i only use anker portable chargers because there are compact and smaller against other portable chargers and safety is very important but with anker you dont have to worry about it there have a MultiProtect Safety System built in in protect it from overheating and it charges faster that other portable charger due to there PowerIQ (Fast Charging Technology). it also comes with a standard matt black finish that leaves no fingerprint.
This is just my opinions on how happy im with with there product