I think as years gone by, Shen/Zhao became one of the most memorable pair in figure skating, doesn't matter which titles they won or not.
They had the most magnificent improvement from brilliant technical skaters to a a pair which is a dream to watch and enjoy.
There are 3 best pairs in the history in my mind:
Gordeeva/Grinkov, an ethernal beauty and unison, which can make you cry.
Shen/Zhao, very similar to G/G, but somehow more human-like, more living in the same planet where we all are, their emotions are our emotions, which also can make you cry ( like I did in their Turandot program watching them first).
Mishkutionok/Dimitriev, the most passionate pair in the history. No ethernal things, but passion, love, full-hearted. They never wanted to sacrifice their passionate style to look even more beautiful. They had been what they've been.
Berezhnaya/ Sikharulidze are brilliant skaters, a bit try to be similar to Gordeeva/Grinkov, but never reached the league of the previous one's.
(Could we call Totmianina/Marinin a memorable pair if we think about the previous one's???? ......)