It's always fascinating to learn which skaters one's favorite skaters like best. I can see that Bebe's quickness of movement would appeal to him, and I'm pleased that he likes Evan.
May I be a copyeditor geek for a moment? (I love the idea of playing with words and shades of meaning, so forgive me for taking up time and space with this.) The two words you offered, cleanliness and unimpeachableness....intriguing. Do you mean in terms of skating? I'd be likelier to use tidiness or neatness if Dai is speaking of Meryl's way of moving. The three words are synonyms in the absolute sense, but cleanliness usually is used to refer to whether someone's clothes are clean, neat, and tidy. Unimpeachableness (just looked up to check) could instead be unimpeachability (both forms are listed in my dictionary but unimpeachability is listed first, implying that it's preferred,), but I've only heard it used in terms of behavior, not technique...I wonder what Dai was implying in his Japanese--an evaluation of her as a person or on the ice?