I'm considering Castle Mamber Monster 2200kv since I tried similar thing in the HPI Vorsa this combo is powerful as Tekin RX8+2650kv I'm using now but with significantly better low torque performance, it can push the heavy Vorsa without any lagging feel on your throttle finger.
Anyway I will test drive the 8.2e with my current Tekin combo first, if handling not fullfilled I may switch to this Castle combo