I played TT01 as my first touring car. It is start up cost is low but once you want to add some options....it becomes black hole. For me...not recommend.
Then I change to TB03. I think if you don't put any options, TB03 is much better than TT01. Better plastic. Everything can set. (while TT01, everything can't set) So I vote TB03.
But...
Last month I got a Kyosho TF-5S...and then I will say...TF-5S is even better than TB03. What I talk about is a car without adding any option. For a complete original car, TF-5S is faster in straight road and easier to control in cornering.
The only problem is spare parts is relatively rare, when compare to tamiya.
But...I must say...I like TF-5S more. And all of my friends tried and said the same.
I played TT01 as my first touring car. It is start up cost is low but once you want to add some options....it becomes black hole. For me...not recommend.