I would guess that the most mentioned and the top model are the same -- Peugeot and the PX-10. It seems like the brand with the most consistent magical pixie dust among the various models and levels, and the PX-10 seems to me like the most accessible of the highly sought after models, the one that was just out of reach for most members here during their youth. My guess for the surprisingly popular one would be the Raleigh Super Course.