I don't think theres any one chassis that is ''better'' than any others. If everyone at your local track runs a TCX, then it'd be much easier to find a setup for it than for something like a Magic E4.
Just pick the car that you can get spares for, that you can get setup quickly and is best value for money.
Personally, for me thats the Xray, but thats over here in the UK. Where you are might have a different chassis of choice.
Quote, Leodis, 2007: ''I've been shopping online for 9 years and the only charge I've ever had to dispute with my credit card company was from TiR. Congratulations TiR. Even porn sites are more ethical than your company!''
RC cars - I haz sum.