having driven heaps of both, an r34 gtt, is a nice new car, which goes well. 99% r32 gtr's show their age, its the little things that count, paint fade, squeaks and rattles, a/c not working, dash bubbles, if you can afford to get a really good one then they are a better car by far, but the running costs, maintainance and repairs(remember its more than 10 yrs older)will be 10 times that of the gtt that probably just needs servicing and tyres. Both great cars in my opinion.