Castle 2200Kv or Medusa 80mm 2000Kv

[phibes]

Hi there,

im going to convert an 1/8-scaly truggy (Mantis). Since the 8s-ESCs are too expensive for me I decided to get the MMM. I wonder if the MMM-Set with 2200KV-motor or the MMM-ESC with a 80mm Medusa 2000Kv would be the better option. The Truggy will weight around 4.7kg and run on 6s. It will be used for bashing only.
I should rather be overpowered then underpowered.
I wonder if the larger diameter of the Castle means that it produces more torque than the longer and heavier Medusa. And how do they compare in terms of efficiancy?

many thanks