Alfa enthusiasts really rate the 75. Yes, it's a reskinned Alfetta, but it is also much improved over the earlier cars. Some prefer the 166 Giulietta, but even those have a habit of modifying their older cars with bits from the 75.
In terms of the 33, then you're very, very wrong. Again, it's a much improved version of an older car (in this case, the Sud) - the flat-4 engine is still one of the best 4 pots ever made. They're also very quick, very comfortable, and can outhandle just about any 1980s 'hot hatch' out there.