I drift with a micro rs4 (no dbox) and I think the little thing handles pretty well. The only problem I have with it is: the engine is way to fast for a drift car. This means, I need to lay off the throttle a little.

I also have an m18 on its way with a graupner speed 300 motor. I haven't heard a lot about the motor but I've read its pretty sweet.

Also, the person I bought the m18 from is throwing in a penguin chassis for my rs4. I dont' know how much difference it'll do but... we'll see.

for grip racing, m18 is the way to go. for drifting, I guess it's preference.