Winter tyres – Conti vs. Pirelli

Hello together, just think about the winter tyre purchase. My Mazda dealer has just complete bikes with Pirellibesolung on offer. They are probably officially supported by Mazda. In the last ADAC winter tyre test they caused only moderate enthusiasm. Quite clear test winner at the ADAC were Conti who are also available at an acceptable price in the relevant trade. Is there experience? What would you take?