The R32 is more of a driver's car, the 33 is more of a cruisy car.
Drive both and think about which kind of car you'd prefer more! The 32's steering/handling gives more feedback and is slightly better, personally i prefered the smaller and tighter interior, it seemed to involve you more than the r33's does. The 33 has a better motor n faster in a straight line, is a newer car and also isn't far behind the 32 round the twisties.
Looks wise R32 > R33
Engine wise Rb25 > Rb20