Today's Nice Price or No Dice 540i M-Sport is touted by its seller as the perfect "poor man's M5." We'll have to see about that, as well as just how poor you could be and still afford the car.

Two years ago, I fell hopelessly in love with the Cadillac CT5-V Blackwing. No other four-door on sale today offers as much performance and joy, whether you’re driving it to work or caning it around a ...