.....many of these cars are no valid option. Unless you have money to burn but then I would look into a higher class.
A Mercedes C-class, Lexus IS/GS and also the Jaguar XE (which is a valid competitor in Europe) are completely overpriced; we're talking between 1,2 and 1,7 billion for these cars in a better trim.
The Alfa is not available, nor are the Sportback Audi or GT BMW versions (which are in fact fancy words for hatchbacks). For decent prices that is.
I would never ever cough up 600+ million for a Camry or Accord, even if the versions are rather luxureous. But it must be said, they are quite well adapted to the road conditions over here, The same applies for a Mazda 6, a $30K car in the US, even if it is a beauty. Its problem is that the resale value plummets (relatively speaking) and that it cosmetically changes somewhat every 6 to 12 months. But it is a good option to consider as second hand.
The shortlist in this price class for a 'drivers car' which are relatively well adapted to the local circumstances is:
BMW 328i.
Great engine, direct steering but not too bouncy. But outdated dashboard etc. but with a great seating position.
But: They are working very hard to introduce a completely new model (since Audi, Mercedes and Alfa have newer and better options in this segment). So unless you don't care about resale value and don't give a rat's @ss about the generation of your car, I would let this one slide. You could wait for the new model but I think they will price it much higher, I expect an extra 100 million which would move it more in the Benz territory.
Audi A5 Coupé.
Rather hard suspension but impeccible finishing. Currently Audi is even better than Mercedes in its quality. For a relatively interesting price, comparable to the BMW 3 series. A nice advantage is that Audi's look alike in every new generation, so it will take quite some time before it will start to look outdated.
Subaru Impreza (WRX).
Many people still think this is a Korean brand. Superior 4WD, not the most beautiful design but technically a beauty. If you're into the Fast and the Furious - Tokyo Drift, this is a must have. But serious; a completely under-estimated brand.