New towing vehicle

Hello together, look for a new towing vehicle at the moment. In the narrow selection comes A6/5 or XC60.. The XC60 has series Allrad and the performance data speak on paper also for itself as regards trailer operation (car 1.8 to.).. Currently I drive a Passat B8. Now my questions… Does anyone have the direct comparison of the A6/5 compared to the XC60? Quality, workmanship, driving behavior, etc… It would be about 3 years old, look from 2018… What should I consider with the XC60 regarding the equipment? Is DAB+ series? Keyless access to the vehicle series? Thank you!