I drive GMC products (and just got rid of a RAM that tried to kill me). My first car cost 400 USD and I have literally owned a hundred-dollar pickup truck with a green vinyl sofa strapped to the frame where the bed was supposed to be. And I still wouldn't buy one of these ugly new BMWs or a Hyundai that just ripped off another maker's styling...or an Audi, or a VW, and probably not another Porsche or MB...not sure what that makes me.
I also wouldn't buy a "luxury" marque of another manufacturer. See: Acura, Lexus, Infiniti, Cadillac, Lincoln...just don't get the premium.
One caveat: talking explicitly about buying new.