Guys, we are forgetting they are all good cars in their realm, each have their pros and cons for whatever platform you will use one for.
If you are going to buy a GTR, do not buy one for 14k-18k.. You will plunge your self in to debt. Spend big.
With the 33s they are definitely a bang for buck bargain but far flung from my own personal preference.
The 33 GTRs are great, same diff as 32 gtr. Remember that even with the r34 series they are still a 10+ year old car and will require at least some mechanical aptitude if not a friend that has a clue.
Honestly, its all about what YOU want out of your car at the end of the day.
If you want a nicer, newer car that you may not want to spend lots of $$$ on at once, buy an r34, do some engine bolt ons etc and enjoy it.
If you want a car with a big power goal, and you are on a budget, buy an older car for 15k with a decent mod list done to it (non gtr range).
It comes down to what your goal is imo, for me, i wanted a dedicated RWD car to get into drift scene so i moved from my beloved GTR into a Silvia, which i totally adore.
Bang for buck though (if you dont care about how it looks or amount of f**kwits owning one) buy an r33, make sure its clean and ticks the boxes for you, and you can be happy for 12k-16k with a clean example, none of this peeling paint bunky shit.