32GTR = expensivish for a decent one (33GTR's about the same price), alot of lemons to choose if your stingy, but it is the godfather and almighty ruler of the GTR's and has the toughest stance of all with the right setup.
33GTR = nicely priced, newer, better interior, also looks tough with the right setup.
34GTR = imo, i just dont like the shape at all, and a bit expensive right now. if i had $50k to blow id put it into a 32GTR.
Theres nothing wrong with the R33, hence why they come in by the boatload monthly
Theyre probably the best of the whole Skyline/GTR range if anything.