You're right. They all have the EA888 engine with indirect as well as direct injection that overcomes the problem of inlet valves coking up. You are a Passat man, so that argues in favour of the CC which is also by far the best looking of the three. The potential problem with it is the DSG auto transmission, 6-speed wet clutch versions of which can be okay or can be intrusive, though you probably won't notice this much driving on the road.