I guess it all comes down to what YOU want.
R32's are light yes, and i do love the R32 shape, but you've gotta remember these are getting old. So like someone said, you'd probably be better off holding out for a late model R32 V-Spec. And try and get one that's had a proper rebuild because they do have some oil delivery issues i believe?
R33's yes are big. Personally i think they have presence. And i actually quite like the shape, and have since changed from wanting an R32 GT-R, to wanting an R33 GT-R, i can find a 95 R33 GT-R V-Spec, 34 GT-R wheels, everything is immaculate, 12 months rego - 23k. And i feel that the interior of the R33 is so much more advanced than that of the R32.
But seriously man, just go off what you want. Weigh everything up, and go from there.
There's no point driving a car your not happy with, but everyone said was the best.