C34- RB (cheap, easy, breakable), manual, ugly front, dated interior, best appreciated with children, poor fuel economy.
M35 - 2.5T or 3.5, nice interior, dual sunroof, auto only, optional LSD (not sure about C34), not great to tamper with engine, best appreciated with children, poor fuel economy.
Just get a Y34 man. so many more good features over NM35, just not as much space. The cloth interiors are super comfy, just interior is a bit ugly is all.
http://www.carsales.com.au/dealer/details/Nissan-Gloria-2002/OAG-AD-12608512/?Cr=0
http://www.carsales.com.au/private/details/Nissan-Cedric-1999/SSE-AD-4213766/?Cr=0
(you could get those a few thousand cheaper)