Judging from your signature you are kind of a powerfreak too
The main purpose when i switched from a 12 cell Nimh setup to a 10s A123 setup was to lower overall temperatures of my electric components by reducing Amp draw. A nice byproduct was more performance.
2 months ago i moved all components in my truggy. Take a look at the videos in my signature to see the same setup performing in my truggy.