well, it is very subjective to everyone that which car is more fun..... for me RC is very fun so all of them are very fun!!! you need to see what function you need to use if you want fast but your home is not too big and you dont want to keep a big car than mini e-revo.... if you want to feel the monster power than big e=revo and e-maxx.... same as slash.... slash is too small to play on rough roads which is not good for an off road car as it cannot use it's function, for me i would choose big ones if someone ask me to choose between big and mini