Traxxas Spartan lipos

[FastFrankie]

I was wondering what batteries people run in their Spartan for max speed and run time. The*
Traxxas 2878*LiPo 3S 11.1V 8400mAh 25C is what I was thinking about buying but wondered if anyone had a better recommendation. Maybe a more economic option.

[jeremy]

I run a single 5 s