does anyone use really big batteries?

[ReV:-O]

yeah kinda, but how comes so many people use maxamps if they are not very good?
i thought they were the most popular brand. so flightpower you say? do they make any 8000mAh batteries do you know? or at least 160A continuous batteries just to be safe. 125A is too close to 120A for my liking, even if you say it works (no offence, im just paranoid lol)