Reporting back. Got S7 and it's been a year with few problems, nothing major. Previous owner transferred me the platinum audi care so not a single penny spent for few repairs. Car is a rocket and has distinctive feeling compare to other BMWs i've had. I became a Audi fan but I still love my X5
My verdict so far is that smaller cars are better with BMW and bigger size is better with Audi. But damn infotainment is a shithole in Audi.