Go with a XXX-S. I run that car and that thing is so consistant. I love it. Its very easy to drive and is so smooth. The Losi guys are also a big help. Just e-mail one of them and they will send a response back withen 24 hours. (depends on which day). The top 3 guys at my track run XXX-S. They are also very easy to setup. And the car doesnt brake as easily as the TC3.