Question slim battery and other extended battery for note 3.

I have 2 questions as followed:
1. Anyone here knows a slim extended battery that is better than original manufacturer Samsung battery ? By this, I meant better in real life, not on paper. I know a lot of batteries claiming 4800 mah but their performances are horrible.
2. Anyone can compare Hyperion vs zerolemon vs MPJ extended battery in terms of thickness.

Thanks so much.