depends on how much capacity u need la... if for phone, no need huge capacity, it will just bigger size and heavier...
if for phone, normally ppl using capacity around 5000mAh....

for what i found, Yoobao is much better than other brands in terms of quality, and design. i means original one...

YB665 - 15600 mAh around RM 150-200
YB6016 - 5200 mAh around RM 100...

there is few brands out there which have good quality for power banks,
those brands maybe have other good products, but doesn't means they have good quality for power bank....

U can read Chinese right?
U go to taobao, and search for yoobao power bank, go to the official shop web, add see which u preferred...

I cannot read, my Chinese friend was the agent so he help me buy... Hahaha...

Warranty can send back one.... And u will get almost half of the price u get here... Same warranty, just need to spend around RM 10 to send it back.... Worth? It's depends on you~ XD

mine is through agent, RM 14 send from China to Malaysia by flight~ but i never send back caz no problem~ lol

okok only la~ not so expensive.... but if the things break because of delivery, no need sent back, snap a photo and send to agent, they will claim a new one for u...