I've got a CRC red case battery, but the carpet track has been too dirty to really get a good run in on it yet since we're racing outdoors at the moment. Been strong for what little running I have done with it so far though.

May not be a concern to you, but it isn't 100% balanced left-right, it's slightly heavier on the end opposite of the battery connections. Hasn't been an issue for me, just something to be aware of.