Generally the best car for racing would be the car which has the most parts available in the market as well as a good chassis etc..
So far the EK6 & EK9 civics are doing best in that department as they are becoming cheaper and therefore more people are buying them and demanding more parts to modify them with.
As for the charade. the GTxx is one hell of a car for its size, and it still comands alot of respect from the 1.6 liter balenos, civics & corollas.
Whatever you guys decide is the best car, just drive safe (at any speed).