For me, I will put it this way. I own 3 1971 Imperial coupes, one a sunroof car, and also own one 1969 Imperial coupe. I love them all but overall, to me at least, the 1969 is a clear winner in the styling department (a masterpiece) but the 71s are better cars. The 69's grille is pure class, the cornering light gills are a perfect touch, and the tail lights are clean and simple. But the 71s aren't far behind. Many times the first version of a model is the best in terms of styling, but not always.
For example, when the 1969 - 71 Chrysler 300s came out, I thought the 69s were perfect until I saw the 1970 model's improved rear styling, and then over time my view of the overall styling of the 300s has ended up with me liking the 1971 models the best. While the interesing and very beautiful grilles in the 1969 and 1970 models were superb, I found over time the front of the 71 model has turned out to be my favorite (and the car overall) due to its clean simplicity.