Everyone has very good points. I've driven a nice GTiR, and they are quite good. but they arnt really good on petrol, i gotta say. and a skyline has a much better feel too it. much nicer handling, better interior, and more power. But like as they say, 20k might not get you an Immaculate one, But possibly if you look hard enough you could pick an Immaculate one for about 22k.
There is a video on Youtube, back in like '93' of japanese test drivers, testing stock vs stock GTiR vs R32 GTR. around a track. and the GTR is faster not only on straights but around the twisties. And for the life of me I dont understand how, AS the GTiR has a shorter wheen base and is lighter. Possibly something to do with the style of Awd system. where the GTiR is Front first drive. and the GTR is Rear first.
It really depends who you are, 'some people buy cars to drive, and some people buy cars to look at'. which one are you?