Don't Know what to choose

[zouz10]

Hello fellow members, my name is Chris and although I have been a member for a while this is my first post.
Let me begin by telling you what happened. I have an ofna ultra lx comp that was sitting on a shelf for a couple of year and decided to put it to good use in an electric conversion. I got a BK Warrior 9200 with a nemisis motor from an internet site. I used a 6s lipo 30c 2700mah battery. Last weekend while I was idling to go bash a little, the ESC started smoking and basically annihilated itself.
So now I am in the market for something new. I was thinking of a mamba monster maxx or maybe a losi speed controller with motor. When I spoke to the engineer at castle creations, he told me that my 6s 2700mah 30c battery would not be adequate and I would need at least a 6s with "5000mah" otherwise i would cook the ESP. I was wondering how true that was. He also recommended me to use a 4s 5000mah battery so it would be a little more tame.
Any advice is appreciated.
Thank you,
Chris