E30 doesn't look horrible even 25 years later. I doubt if a student is going to have an interest in owning one
E36 still looks good I gotta admit. Interior might not be as good as E46 but the looks and surely drive feeling would be great. (Never driven one but am going on looks lol).
E92 vs. E46.... hmmmm E46 is what inspired me to get a BMW so i'll stick with E46. The newer models fail to beat the looks of the E46 models