Just like in real life I'm not really brand loyal. I like a lot of different cars from different manufacturers. It's great to enjoy an NSX in one race and then run a Challenger SRT-8 in the next. Even if the driving experience isn't 100% true to life, I like how they managed to give each car their own character that seems to suit how you imagine they would drive.
Mitsubishi!!
ferrari.........nuff said.
Ditto this. I'm a car fan in general, have no real favourite manufacturer.
You say that with a Subaru in your avatar.
In other words, I also have a soft spot for Mitsu's. Though other than Subie there aren't any manufactures I particularly despise. Even if they have done unspeakable things and made terrible cars I won't hate them for it.
You listed some that are not manufacturers, such as NISMO.
I voted Nissan. Since they bought Datsun (who bought Prince) they have the GT-R, the Silvias, and the Z cars, on top of the Infinity G series and the SXs. Yes, there are better cars from others, but I think Nissan has a wider range of hits.
This is just in the game. Out of the game, I'm 100% Toyota (though I did enjoy my Subaru). But I buy for price and reliability. And I don't buy American built Toyotas, I buy Toyotas built in Japan, but on a boat, and shipped over here.