Mercedes-Benz C280, a young and dynamic brand, is full of power. I think it's very good and not expensive. 47W
Lexus IS300, also a car driven by young people, is very scientific and perfect, depending on your preference, 45W.
And BMW 330, A4, Saab, all good, neither old nor expensive.
You can afford too many good cars. See for yourself. Good contrast. Don't fix the price, there is no best car, only the car that suits you best.