Hi one77,
What Terry is trying to say is: Buy a Skyline.
Basically it comes down to this:
GT-R fastest down the strip out of the box and once modified.
similar in pace around track to a stock Homo VII both faster then rex.
Most support (aftermarket) for Skyline, then Evo Then rex, in saying this you WILL need this support if purchasing a R32 because let me tell you as an owner and someone who knows a lot of other owners it is by far the most maintenance and resource intensive (money and labour) and by quite some margin.
People seem to talk up the EVO alot and for good reason they are fantastic cars.... out of the box.
Once modified the game changes, potential to produce power is by far the greatest in the Skyline as it not only has the largest engine in capacity but also the opportunity to increase this if you so choose (economically too)
In the end it comes down to how much you want to be working and spending on a car.
now this is my opinion but,
You should drop the rex.
EVO or GT-R
Looks and sound etc are pretty subjective areas so I will leave them to you.
Performance I have talked about above.
Now what I will say is that if you are looking for a daily that you just get in and drive, don't have to do more then the usual required maintenance and only want to do basic and less extreme modifications, the evo is for you.
It has four doors, is more modern, in better condition in some cases due to age (get what you pay for) responds well to modifications (economically speaking) and is all round a nice car day to day.
For any other reason, buy the GT-R you will not be disappointed.