Zerolemon vs Hyperion HELP

[UscTheGamer]

Hello so today I was planning to order a extended battery for my s4. ZeroLemon has a 7500 mah battery for $39.99 on Amazon But hyperion has a the exact same thing for $29.99. If I get the hyperion I could buy the ZeroLemon shock proof case for $19.99 but if I get the ZeroLemon I would have to pay more than I would with them than hyperion. What should I do and what battery is better?
Links:
Hyperion 7500 http://www.newegg.com/Product/Product.aspx?Item=9SIA1WG1088633
ZeroLemon 7500http://www.amazon.com/gp/aw/d/B00CXZI4WQ/ref=redir_mdp_mobile?m=ATVPDKIKX0DER&redirect=true&tag=anan06-20
ZeroLemon Case
http://www.amazon.com/gp/aw/d/B00F58RISO

 

[Rukbat]

I've never run tests on either one so I can't tell you which is better, but I've bought from Hyperion and I've never been sorry.