I'd personally take the r35. Not a big fan of European cars. All the way from electricals to cars i like Japanese.
People always say european cars are so much better built but from my experience thats not the case. My uncles got a BMW fwd and a nissan 4wd and hes driven the BMW only acouple of times because its always having problems and it's always in the repair station. My brothers Saab had a accident from behind and all it's seat belts, computers just went. Let's say your porches does take more redlines and crap, it's gana give in one day and when it does haha good luck fixing it. Part for euro cars are so0o0o expansive you'll wish you had the gtr and it broke down every week:P they are very over rated.
I also have a lot of respect for nissan and other Japanese car manufacturers for trying to make performance cars available to a larger population of people not just the extremely rich. Japans come such a long way and they'll still keep on getting better.
I feel r35 gtr is a lot more modest aswell which i really like.
Oh and the only times i see gt2 and gt3 porches on the street is on weekends and public holidays cause theyre not a very good get around car. I have a feeling r35 will be a lot more comfertable to drive as a daily driver.
I personally love r34 GTR and all other GTR's, and not because i wont be able afford any better but because i genuine really respect and think highly of them.
I'm not being too fair on Porche. But you guys werent being too fair on Nissan ither:P
If i could ever find one of these z-tunes i'd take it over a gt3 any day!