Which of these cars should we buy? two= one luxury and one cheap?

Which of these cars should we buy? two= one luxury and one cheap?
first of all,two cars
keep answering cause i will add more data to it.

first chocies between luxury, sedan, coupe, SUV, etc
choose a make
Audi A6, A8, A5 all V6s
BMW 135icoupe , 335i coupe, 630i
Cadillac CTS, escalade
Infiniti FX35, G37sedan
Lexus GS300, LS460, LX570
Jaguar XF
Land Rover Range Sport
Mercedes CLS 350, S350, E coupe
Porsche Cayenne
Nissan Atlima
Chevrolet Caprice
Toyota Aurion