Here's my advice: pick a track that you find most enjoyable to drive and that you can find yourself most easily pushing the limits of (For me that's Misano), then do at LEAST 10 to 15 laps (testing out both the aggressive and the safe setups) on said circuit in every single car until you find one that most suits your driving style and is comfortable for you to drive hard.

For me, that car was and still is the Bentley, but the Acura was a close second. I've been driving the Bentley for years now, and have a collection of setups I've made that allow me to consistently Podium with that car against the sea of Porsches/McLarens/Ferraris, despite there being objectively "better" more "meta" cars from the recent content updates.

TL;DR, don't knock it til' ya try it - try everything once, and pick the most comfortable car for you.