dude the gtr IS the better car if its running fine, why would people buy gtr's if they werent any good? the only reason i do it is to fire up all the gts-t owners, it gets them going EVERY time. reason my gtr broke, was it had the dodge done on it and spun the big end, and being a 17yr old performance car u should expect that.
i previously owned a gts-t and had spent ~15k on it, all it needed was the built motor and i opted for the gtr, as it would be the safer option (doubt thered be much traction in a 750hp rwd car lol)