Electric models are seriously quick, if built properly.
I love the smell, and sound, of 2 stroke too much. 
I made mine quick, kept stripping spur gears. Then I put a metal spur on, then I was breaking driveshafts, so I upgraded those, then my rear diff went, replaced that and in the end the magnet in the motor broke into 2! Thats what happens when you put a decent brushless and lipo setup in a cheaply made car!
My firestorm flux on the other hand, which had well designed transmission and diffs with a spur gear clutch system was great. Bulletproof, very fun and the hpi plastic compound is pretty tough. A little trick, if you boil your plastic suspension arms (I think that's what theyre called, the arms which connect the hubs to the chassis) in water for about 30 minutes, then let them cool, the plastic changes and becomes less brittle. I used this trick alot and it does make a difference. (I did still manage to break them though, but it's cheaper than RPM plastic parts!)