My opinions after having owned a few of these cars
The R33 in series one form looks so shit from the front, bad grill, bad front bar, bad headlights, Inside everything feels cheap and is a bit flat and bland. Essentially this is a quintessential mid 90s car from a styling point of view. Great engine, gearbox, handling ect. Also looks good from any angle other than front on.
The R32 looks good from the front looks shoite from the back, I never had a RB20 in mine so never had to deal with the issues related to that, but i have driven a few rb20 R32s and they were very different and i personally did not like it. Inside the R32 had a better feel to it, switchgear, seats ect all feel like they are of higher quality despite being older.
To my eye all the GTRs look good
ande there we have it my 2c lol