Both would make good choices too. Mustang might be more durable.
Also, Kia. Nobody gives this beast a fair shake. It’s fast, handles well and is fun to drive. You won’t likely spin out of a corner, you’ll under steer going in. Teaches you to plant the front going into a corner and roll on the gas to exit the corner, both good skills to have.
Ask always though I’ll race whatever. I just like variety.