I will have to back DanDthekid on the Nitro Comment...
I have Drifted Both Nitro and Electric and for Pure ease of Sliding, Less mess and Less expense the Electric wins hands down every time.

Nitro can slide, they just dont like it as much as the electrics due to the Basic mechanics of the Nitro Motors and what happens when you drift.
An Electric Motor has Instant torque and Generates less heat with the lack of Air flow..
A Nitro motor just by its design alone, needs to generate RPMS before it reaches its Torque Curve.

And since this is a RC Drift guide for noobs, then Noobs are not going to be looking for a HPI RS4 to learn on in the first place.