Li-Ion Power Tool cells work great for RC!

[MetalMan]

I think that to use Emoli cells, a 2P configuration would be best. 6s Emoli can only do 864watts continuously, and the burst isn't much higher, and that might not be enough. A 5s2p setup would weigh as much as 15NiMh cells, but have the voltage of 16 and the power of closer to 18 or more. Then the runtime would also be incredible...
4s2p would also suffice, and would be less weight.
If you like the M1 cells, why not use 2p? That would provide good runtime, and loads of power that you wouldn't know what to do with!