well i have an hpi rs4 sport. 2 speed 4 wheel drive right now.. im happy with hpi but im ready for a change. the tt-01 seems like a nice cheap way to go for right now since i just had a daughter. if i could get one used from someone local then id be happy. someone had one for sale where i live for 100 bucks and had ups with it but when i said i wanted it about 30 mins later it was gone.