You don't need to buy GTR if you don't drive it on race track. Also you don't need to be rich to get GTR like driving experience. You can just buy used Q60 400 and put KW on it. I own 2007 G35S and 2017 GSF. I think my G35S with KW/Bilstein, Eibach sway bars and some chassis braces is more stable and sharper than GSF. My G35S was also used when I bought it 8 years ago. But my new GSF rides much more comfortable and can hold on race track without overheating engine, transmission, diff, brake etc. Actually my G35S doesn't ride harshly, just more busy. Of course if my GSF is installed with Ohlins, it will become a pure racing machine.