Lookign for best power bank for under 50$

Im looking for a good/best power bank battery for under 50$.
The 2 that I found are both 10k mah, both with quick charge 2.1 amp, and 1 of them has qi wireless charging.

MobilPal

http://www.amazon.com/MobilePal-1000...ords=mobilepal

Poweradd

http://www.amazon.com/Poweradd-Pilot...words=poweradd

I just cant make up my mind, any else have any good ones I should be looking at, im trying to buy 1 by the end of this week.