Brushed motor wiring questions

[lincpimp]

Ok, time for another question about sereis and parallel wiring...

Would it be better to wire my batts in series for 4s, and then parallel the motors for lower rpm, or wire the batts in parallel for 2s and wire the motors in series? The only thing I can think is that the current draw thru the esc will be higher on 2s than 4s. I plan to use a MM with a ccbec.

Will either wiring method produce any more power or torque? I guess that I will just have to experiment both ways. The motors that Neil linked to look great, and their kv on 4s with my proposed gearing would be almost perfect.