BMW 440xi Cabrio

This BMW 440i xDrive Cabrio seemed like one of those more obvious choices for a summer test drive during the BMW M Performance Roadshow. The car is the most powerful 4-series in the range, which is just one notch below the M4, but features a friendly four wheel drive. The base model is priced around 25% less than the M4 (PLN 310k / EUR 63k) which is also remarkably consistent with less engine power. It is, however, far unlike the one in the photo. This one is the M Sport model, equipped with a bunch of M Performance parts and individual color, which seems to be Daytona Violet. So this one, or the M4?
/ Warsaw, Poland